{"id":27782,"date":"2025-05-02T16:16:18","date_gmt":"2025-05-02T09:16:18","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=27782"},"modified":"2025-05-02T18:14:48","modified_gmt":"2025-05-02T11:14:48","slug":"name-server-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/name-server-la-gi\/","title":{"rendered":"Name Server l\u00e0 g\u00ec? Vai tr\u00f2 &#038; c\u00e1ch ki\u1ec3m tra-thay \u0111\u1ed5i Name Server"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Name-Server-la-gi\" >Name Server l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Name-Server-hoat-dong-nhu-the-nao\" >Name Server ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Tai-sao-Name-Server-lai-quan-trong\" >T\u1ea1i sao Name Server l\u1ea1i quan tr\u1ecdng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Phan-biet-Name-Server-va-DNS\" >Ph\u00e2n bi\u1ec7t Name Server v\u00e0 DNS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Cach-kiem-tra-Name-Server-cua-ten-mien\" >C\u00e1ch ki\u1ec3m tra Name Server c\u1ee7a t\u00ean mi\u1ec1n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Su-dung-cong-cu-tra-cuu-WHOIS-truc-tuyen\" >S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 tra c\u1ee9u WHOIS tr\u1ef1c tuy\u1ebfn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Su-dung-Command-Prompt-Windows-hoac-Terminal-MacLinux\" >S\u1eed d\u1ee5ng Command Prompt (Windows) ho\u1eb7c Terminal (Mac\/Linux)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Huong-dan-thay-doi-Name-Server-cho-ten-mien\" >H\u01b0\u1edbng d\u1eabn thay \u0111\u1ed5i Name Server cho t\u00ean mi\u1ec1n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Khi-nao-can-thay-doi-Name-Server\" >Khi n\u00e0o c\u1ea7n thay \u0111\u1ed5i Name Server?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Cac-buoc-thuc-hien-thay-doi-Name-Server\" >C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n thay \u0111\u1ed5i Name Server<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Thay-doi-Name-Server-mat-bao-lau-de-cap-nhat-Thoi-gian-cho-DNS\" >Thay \u0111\u1ed5i Name Server m\u1ea5t bao l\u00e2u \u0111\u1ec3 c\u1eadp nh\u1eadt? (Th\u1eddi gian ch\u1edd DNS)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Cau-hoi-thuong-gap-ve-Name-Server-FAQ\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Name Server (FAQ)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Root-Name-Server-la-gi\" >Root Name Server l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Name-Server-mac-dinh-la-gi\" >Name Server m\u1eb7c \u0111\u1ecbnh l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Lam-gi-khi-cau-hinh-sai-Name-Server\" >L\u00e0m g\u00ec khi c\u1ea5u h\u00ecnh sai Name Server?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Co-bat-buoc-phai-su-dung-Name-Server-cua-nha-cung-cap-hosting-khong\" >C\u00f3 b\u1eaft bu\u1ed9c ph\u1ea3i s\u1eed d\u1ee5ng Name Server c\u1ee7a nh\u00e0 cung c\u1ea5p hosting kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/#Su-dung-Name-Server-cua-ben-thu-ba-nhu-Cloudflare-co-loi-ich-gi\" >S\u1eed d\u1ee5ng Name Server c\u1ee7a b\u00ean th\u1ee9 ba (nh\u01b0 Cloudflare) c\u00f3 l\u1ee3i \u00edch g\u00ec?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<p>Name Server \u0111\u00f3ng vai tr\u00f2 nh\u01b0 cu\u1ed1n danh b\u1ea1 c\u1ee7a Internet, gi\u00fap tr\u00ecnh duy\u1ec7t web t\u00ecm \u0111\u00fang &#8220;\u0111\u1ecba ch\u1ec9 nh\u00e0&#8221; (<a href=\"https:\/\/interdata.vn\/blog\/dia-chi-ip-la-gi\/\">\u0111\u1ecba ch\u1ec9 IP<\/a>) c\u1ee7a <a href=\"https:\/\/interdata.vn\/blog\/website-la-gi\/\">website<\/a> b\u1ea1n mu\u1ed1n truy c\u1eadp t\u1eeb &#8220;t\u00ean \u0111\u01b0\u1eddng&#8221; (<a href=\"https:\/\/interdata.vn\/blog\/domain-la-gi\/\">t\u00ean mi\u1ec1n<\/a>). Hi\u1ec3u r\u00f5 Name Server l\u00e0 g\u00ec, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 qu\u1ea3n l\u00fd l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft n\u1ebfu b\u1ea1n s\u1edf h\u1eefu website ho\u1eb7c \u0111ang t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1ch Internet v\u1eadn h\u00e0nh. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u1ea3i th\u00edch chi ti\u1ebft, d\u1ec5 hi\u1ec3u m\u1ecdi th\u1ee9 b\u1ea1n c\u1ea7n bi\u1ebft.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Name-Server-la-gi\"><\/span>Name Server l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/interdata.vn\/blog\/name-server-la-gi\/\"><strong>Name Server (M\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n)<\/strong><\/a> l\u00e0 m\u1ed9t <a href=\"https:\/\/interdata.vn\/blog\/may-chu-server-la-gi\/\">m\u00e1y ch\u1ee7<\/a> chuy\u00ean d\u1ee5ng c\u00f3 ch\u1ee9c n\u0103ng ch\u00ednh l\u00e0 <strong>d\u1ecbch (ph\u00e2n gi\u1ea3i) t\u00ean mi\u1ec1n<\/strong> m\u00e0 con ng\u01b0\u1eddi d\u1ec5 nh\u1edb (v\u00ed d\u1ee5: <code>google.com<\/code>) th\u00e0nh <strong>\u0111\u1ecba ch\u1ec9 IP (Internet Protocol)<\/strong> d\u1ea1ng s\u1ed1 m\u00e0 m\u00e1y t\u00ednh c\u00f3 th\u1ec3 hi\u1ec3u (v\u00ed d\u1ee5: <code>142.250.204.110<\/code>). Qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i n\u00e0y di\u1ec5n ra \u00e2m th\u1ea7m m\u1ed7i khi b\u1ea1n l\u01b0\u1edbt web.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-01.jpg\" alt=\"name server 01\" width=\"750\" height=\"527\" class=\"aligncenter size-full wp-image-27783\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-01.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-01-300x211.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>H\u00e3y h\u00ecnh dung b\u1ea1n mu\u1ed1n \u0111\u1ebfn nh\u00e0 m\u1ed9t ng\u01b0\u1eddi b\u1ea1n. B\u1ea1n bi\u1ebft t\u00ean \u0111\u01b0\u1eddng v\u00e0 s\u1ed1 nh\u00e0 (t\u00ean mi\u1ec1n), nh\u01b0ng \u0111\u1ec3 h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb d\u1eabn \u0111\u01b0\u1eddng, b\u1ea1n c\u1ea7n t\u1ecda \u0111\u1ed9 GPS ch\u00ednh x\u00e1c (\u0111\u1ecba ch\u1ec9 IP). Name Server th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c t\u01b0\u01a1ng t\u1ef1, cung c\u1ea5p &#8220;t\u1ecda \u0111\u1ed9&#8221; cho tr\u00ecnh duy\u1ec7t web c\u1ee7a b\u1ea1n.<\/p>\n<p>Name Server l\u00e0 m\u1ed9t b\u1ed9 ph\u1eadn kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a <strong>H\u1ec7 th\u1ed1ng T\u00ean mi\u1ec1n (DNS &#8211; <a href=\"https:\/\/interdata.vn\/blog\/dns-la-gi\/\">Domain Name System<\/a>)<\/strong>. DNS gi\u1ed1ng nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd danh b\u1ea1 kh\u1ed5ng l\u1ed3, \u0111\u01b0\u1ee3c ph\u00e2n c\u1ea5p tr\u00ean to\u00e0n c\u1ea7u, \u0111\u1ea3m b\u1ea3o vi\u1ec7c tra c\u1ee9u v\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/domain-migration-la-gi\/\">chuy\u1ec3n \u0111\u1ed5i t\u00ean mi\u1ec1n<\/a> sang IP di\u1ec5n ra nhanh ch\u00f3ng v\u00e0 ch\u00ednh x\u00e1c.<\/p>\n<p>M\u00e1y t\u00ednh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 giao ti\u1ebfp v\u1edbi nhau tr\u00ean Internet. Tuy nhi\u00ean, vi\u1ec7c nh\u1edb h\u00e0ng lo\u1ea1t d\u00e3y s\u1ed1 IP l\u00e0 b\u1ea5t kh\u1ea3 thi v\u1edbi con ng\u01b0\u1eddi. T\u00ean mi\u1ec1n ra \u0111\u1eddi \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, v\u00e0 Name Server ch\u00ednh l\u00e0 c\u1ea7u n\u1ed1i k\u1ef9 thu\u1eadt quan tr\u1ecdng.<\/p>\n<p>M\u1ed7i nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 hosting ho\u1eb7c \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n th\u01b0\u1eddng cung c\u1ea5p c\u00e1c Name Server ri\u00eang cho kh\u00e1ch h\u00e0ng s\u1eed d\u1ee5ng. Khi b\u1ea1n mua hosting, b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c cung c\u1ea5p th\u00f4ng tin Name Server \u0111\u1ec3 &#8220;tr\u1ecf&#8221; t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh v\u1ec1 \u0111\u00f3.<\/p>\n<p>Th\u00f4ng th\u01b0\u1eddng, m\u1ed9t t\u00ean mi\u1ec1n c\u1ea7n \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u00edt nh\u1ea5t hai Name Server (NS1, NS2). \u0110i\u1ec1u n\u00e0y nh\u1eb1m m\u1ee5c \u0111\u00edch d\u1ef1 ph\u00f2ng v\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/load-balancing\/\">c\u00e2n b\u1eb1ng t\u1ea3i<\/a>. N\u1ebfu m\u1ed9t Name Server g\u1eb7p s\u1ef1 c\u1ed1 ho\u1eb7c qu\u00e1 t\u1ea3i, Name Server c\u00f2n l\u1ea1i v\u1eabn \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng, gi\u00fap website lu\u00f4n truy c\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Name-Server-hoat-dong-nhu-the-nao\"><\/span>Name Server ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Qu\u00e1 tr\u00ecnh Name Server gi\u00fap b\u1ea1n truy c\u1eadp m\u1ed9t website di\u1ec5n ra qua nhi\u1ec1u b\u01b0\u1edbc ph\u1ee9c t\u1ea1p nh\u01b0ng c\u1ef1c k\u1ef3 nhanh ch\u00f3ng, th\u01b0\u1eddng ch\u1ec9 trong mili gi\u00e2y. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u00f4 t\u1ea3 \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh ph\u00e2n gi\u1ea3i DNS:<\/p>\n<p><strong>B\u01b0\u1edbc 1: Nh\u1eadp t\u00ean mi\u1ec1n<\/strong> B\u1ea1n g\u00f5 t\u00ean mi\u1ec1n (v\u00ed d\u1ee5: <code>vinahost.vn<\/code>) v\u00e0o thanh \u0111\u1ecba ch\u1ec9 c\u1ee7a tr\u00ecnh duy\u1ec7t web (nh\u01b0 Chrome, Firefox) v\u00e0 nh\u1ea5n Enter.<\/p>\n<p><strong>B\u01b0\u1edbc 2: <a href=\"https:\/\/interdata.vn\/blog\/query-la-gi\/\">Truy v\u1ea5n<\/a> \u0111\u1ebfn Recursive DNS Server<\/strong> Tr\u00ecnh duy\u1ec7t g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn m\u1ed9t m\u00e1y ch\u1ee7 DNS \u0111\u1eb7c bi\u1ec7t g\u1ecdi l\u00e0 <strong>Recursive DNS Server<\/strong> (th\u01b0\u1eddng do nh\u00e0 cung c\u1ea5p <a href=\"https:\/\/interdata.vn\/blog\/mang-internet\/\">m\u1ea1ng Internet<\/a> &#8211; ISP c\u1ee7a b\u1ea1n qu\u1ea3n l\u00fd). M\u00e1y ch\u1ee7 n\u00e0y gi\u1ed1ng nh\u01b0 ng\u01b0\u1eddi trung gian \u0111i t\u00ecm th\u00f4ng tin.<\/p>\n<p>Recursive DNS Server tr\u01b0\u1edbc ti\u00ean s\u1ebd ki\u1ec3m tra <a href=\"https:\/\/interdata.vn\/blog\/bo-nho-dem-la-gi\/\">b\u1ed9 nh\u1edb \u0111\u1ec7m<\/a> (cache) c\u1ee7a ch\u00ednh m\u00ecnh xem c\u00f3 l\u01b0u th\u00f4ng tin \u0111\u1ecba ch\u1ec9 IP c\u1ee7a t\u00ean mi\u1ec1n \u0111\u00f3 t\u1eeb c\u00e1c l\u1ea7n truy v\u1ea5n tr\u01b0\u1edbc kh\u00f4ng. N\u1ebfu c\u00f3, n\u00f3 s\u1ebd tr\u1ea3 v\u1ec1 IP ngay l\u1eadp t\u1ee9c.<\/p>\n<p><strong>B\u01b0\u1edbc 3: Truy v\u1ea5n Root Name Server (N\u1ebfu kh\u00f4ng c\u00f3 trong cache)<\/strong> N\u1ebfu Recursive DNS Server kh\u00f4ng c\u00f3 th\u00f4ng tin trong cache, n\u00f3 s\u1ebd h\u1ecfi m\u1ed9t <strong>Root Name Server<\/strong> (M\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n g\u1ed1c). \u0110\u00e2y l\u00e0 c\u1ea5p cao nh\u1ea5t trong h\u1ec7 th\u1ed1ng DNS, qu\u1ea3n l\u00fd c\u00e1c \u0111u\u00f4i t\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t (nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/ten-mien-com-la-gi\/\">.com<\/a>, .net, <a href=\"https:\/\/interdata.vn\/blog\/ten-mien-vn-la-gi\/\">.vn<\/a>).<\/p>\n<p>Tr\u00ean to\u00e0n c\u1ea7u ch\u1ec9 c\u00f3 13 c\u1ee5m Root Name Server logic (\u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean t\u1eeb A \u0111\u1ebfn M), nh\u01b0ng th\u1ef1c t\u1ebf bao g\u1ed3m h\u00e0ng tr\u0103m <a href=\"https:\/\/interdata.vn\/blog\/server-vat-ly-la-gi\/\">m\u00e1y ch\u1ee7 v\u1eadt l\u00fd<\/a> ph\u00e2n t\u00e1n kh\u1eafp n\u01a1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ed1c \u0111\u1ed9 v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i.<\/p>\n<p><strong>B\u01b0\u1edbc 4: Chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn TLD Name Server<\/strong> Root Name Server kh\u00f4ng l\u01b0u tr\u1eef IP c\u1ee5 th\u1ec3, nh\u01b0ng bi\u1ebft &#8220;ai&#8221; qu\u1ea3n l\u00fd \u0111u\u00f4i t\u00ean mi\u1ec1n t\u01b0\u01a1ng \u1ee9ng. V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n t\u00ecm <code>vinahost.vn<\/code>, Root Server s\u1ebd ch\u1ec9 d\u1eabn Recursive DNS Server \u0111\u1ebfn <strong>TLD (<a href=\"https:\/\/interdata.vn\/blog\/top-level-domain\/\">Top-Level Domain<\/a>) Name Server<\/strong> qu\u1ea3n l\u00fd \u0111u\u00f4i <code>.vn<\/code>.<\/p>\n<p><strong>B\u01b0\u1edbc 5: Chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn Authoritative Name Server<\/strong> TLD Name Server c\u0169ng kh\u00f4ng l\u01b0u IP cu\u1ed1i c\u00f9ng, nh\u01b0ng l\u1ea1i bi\u1ebft m\u00e1y ch\u1ee7 n\u00e0o ch\u1ecbu tr\u00e1ch nhi\u1ec7m tr\u1ef1c ti\u1ebfp cho t\u00ean mi\u1ec1n <code>vinahost.vn<\/code>. M\u00e1y ch\u1ee7 n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>Authoritative Name Server<\/strong> (M\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n c\u00f3 th\u1ea9m quy\u1ec1n).<\/p>\n<p>Authoritative Name Server ch\u00ednh l\u00e0 c\u00e1c Name Server m\u00e0 b\u1ea1n c\u1ea5u h\u00ecnh cho t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh t\u1ea1i nh\u00e0 \u0111\u0103ng k\u00fd (v\u00ed d\u1ee5: <code>ns1.vinahost.vn<\/code>, <code>ns2.vinahost.vn<\/code>). Ch\u00fang ch\u1ee9a th\u00f4ng tin b\u1ea3n ghi DNS \u0111\u1ea7y \u0111\u1ee7 v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t cho t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n<p><strong>B\u01b0\u1edbc 6: Nh\u1eadn \u0111\u1ecba ch\u1ec9 IP<\/strong> Recursive DNS Server g\u1eedi truy v\u1ea5n \u0111\u1ebfn Authoritative Name Server \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh. Authoritative Name Server tra c\u1ee9u trong d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh v\u00e0 tr\u1ea3 v\u1ec1 \u0111\u1ecba ch\u1ec9 IP ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y ch\u1ee7 \u0111ang host website <code>vinahost.vn<\/code>.<\/p>\n<p><strong>B\u01b0\u1edbc 7: Tr\u1ea3 k\u1ebft qu\u1ea3 v\u1ec1 tr\u00ecnh duy\u1ec7t<\/strong> Recursive DNS Server nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 IP, l\u01b0u v\u00e0o b\u1ed9 nh\u1edb cache c\u1ee7a m\u00ecnh (\u0111\u1ec3 t\u0103ng t\u1ed1c cho l\u1ea7n truy c\u1eadp sau) v\u00e0 g\u1eedi \u0111\u1ecba ch\u1ec9 IP n\u00e0y v\u1ec1 l\u1ea1i tr\u00ecnh duy\u1ec7t web c\u1ee7a b\u1ea1n.<\/p>\n<p><strong>B\u01b0\u1edbc 8: K\u1ebft n\u1ed1i \u0111\u1ebfn website<\/strong> Tr\u00ecnh duy\u1ec7t web c\u1ee7a b\u1ea1n cu\u1ed1i c\u00f9ng \u0111\u00e3 c\u00f3 \u0111\u1ecba ch\u1ec9 IP c\u1ea7n thi\u1ebft. N\u00f3 s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP n\u00e0y \u0111\u1ec3 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp \u0111\u1ebfn <a href=\"https:\/\/interdata.vn\/blog\/web-server\/\">m\u00e1y ch\u1ee7 web<\/a> \u0111ang l\u01b0u tr\u1eef n\u1ed9i dung c\u1ee7a <code>vinahost.vn<\/code> v\u00e0 t\u1ea3i <a href=\"https:\/\/interdata.vn\/blog\/page-la-gi\/\">trang web<\/a> v\u1ec1 hi\u1ec3n th\u1ecb cho b\u1ea1n.<\/p>\n<p>To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p n\u00e0y \u0111\u1ea3m b\u1ea3o b\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp h\u00e0ng t\u1ef7 website tr\u00ean Internet ch\u1ec9 b\u1eb1ng c\u00e1ch nh\u1edb nh\u1eefng t\u00ean mi\u1ec1n \u0111\u01a1n gi\u1ea3n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tai-sao-Name-Server-lai-quan-trong\"><\/span>T\u1ea1i sao Name Server l\u1ea1i quan tr\u1ecdng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Name Server c\u00f3 vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi s\u1ef1 hi\u1ec7n di\u1ec7n tr\u1ef1c tuy\u1ebfn c\u1ee7a b\u1ea1n v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh c\u1ee7a Internet n\u00f3i chung. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng l\u00fd do ch\u00ednh:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-02.jpg\" alt=\"name server 02\" width=\"750\" height=\"340\" class=\"aligncenter size-full wp-image-27784\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-02.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-02-300x136.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p><strong>1. Gi\u00fap truy c\u1eadp Website d\u1ec5 d\u00e0ng:<\/strong> \u0110\u00e2y l\u00e0 vai tr\u00f2 c\u01a1 b\u1ea3n nh\u1ea5t. N\u1ebfu kh\u00f4ng c\u00f3 Name Server th\u1ef1c hi\u1ec7n vi\u1ec7c &#8220;phi\u00ean d\u1ecbch&#8221; t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP, b\u1ea1n s\u1ebd ph\u1ea3i nh\u1edb v\u00e0 nh\u1eadp c\u00e1c d\u00e3y s\u1ed1 IP ph\u1ee9c t\u1ea1p m\u1ed7i khi mu\u1ed1n v\u00e0o m\u1ed9t trang web. Name Server l\u00e0m cho Internet tr\u1edf n\u00ean th\u00e2n thi\u1ec7n h\u01a1n v\u1edbi ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<p><strong>2. \u0110\u1ea3m b\u1ea3o Website ho\u1ea1t \u0111\u1ed9ng:<\/strong> C\u1ea5u h\u00ecnh Name Server sai ho\u1eb7c Name Server g\u1eb7p s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 truy c\u1eadp v\u00e0o website c\u1ee7a b\u1ea1n, ngay c\u1ea3 khi hosting v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. Name Server l\u00e0 m\u1eaft x\u00edch \u0111\u1ea7u ti\u00ean trong vi\u1ec7c k\u1ebft n\u1ed1i ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn n\u1ed9i dung web.<\/p>\n<p><strong>3. H\u1ed7 tr\u1ee3 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Email:<\/strong> Name Server kh\u00f4ng ch\u1ec9 ph\u1ee5c v\u1ee5 cho web. C\u00e1c b\u1ea3n ghi DNS \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean Name Server (nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/ban-ghi-mx-la-gi\/\">b\u1ea3n ghi MX<\/a> &#8211; Mail Exchanger) c\u0169ng ch\u1ec9 \u0111\u1ecbnh m\u00e1y ch\u1ee7 n\u00e0o ch\u1ecbu tr\u00e1ch nhi\u1ec7m nh\u1eadn email cho t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n. C\u1ea5u h\u00ecnh Name Server sai c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n vi\u1ec7c g\u1eedi\/nh\u1eadn email.<\/p>\n<p><strong>4. \u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 tin c\u1eady:<\/strong> Ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a Name Server c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n, t\u1eeb \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng gi\u00e1n ti\u1ebfp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u1ea3i trang web ban \u0111\u1ea7u. S\u1eed d\u1ee5ng Name Server nhanh, \u1ed5n \u0111\u1ecbnh gi\u00fap c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<p><strong>5. Cho ph\u00e9p qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n linh ho\u1ea1t:<\/strong> Vi\u1ec7c c\u00f3 th\u1ec3 thay \u0111\u1ed5i Name Server cho ph\u00e9p b\u1ea1n d\u1ec5 d\u00e0ng chuy\u1ec3n website sang nh\u00e0 cung c\u1ea5p hosting kh\u00e1c m\u00e0 kh\u00f4ng c\u1ea7n thay \u0111\u1ed5i t\u00ean mi\u1ec1n. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 DNS trung gian \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u su\u1ea5t.<\/p>\n<p>T\u00f3m l\u1ea1i, Name Server l\u00e0 n\u1ec1n t\u1ea3ng k\u1ef9 thu\u1eadt thi\u1ebft y\u1ebfu, \u0111\u1ea3m b\u1ea3o t\u00ean mi\u1ec1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn \u0111\u00fang m\u00e1y ch\u1ee7 ch\u1ee9a website, email v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn kh\u00e1c.<\/p>\n<p>\u0110\u1ec3 website ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh, t\u1ed1c \u0111\u1ed9 cao, vi\u1ec7c ch\u1ecdn nh\u00e0 cung c\u1ea5p uy t\u00edn r\u1ea5t quan tr\u1ecdng nh\u01b0 c\u1ea5u h\u00ecnh Name Server ch\u00ednh x\u00e1c. T\u1ea1i InterData, d\u1ecbch v\u1ee5 <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/thue-hosting\/\">Thu\u00ea Hosting<\/a> gi\u00e1 r\u1ebb ch\u1ec9 t\u1eeb 1K\/ng\u00e0y d\u00f9ng ph\u1ea7n c\u1ee9ng th\u1ebf h\u1ec7 m\u1edbi, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng, \u1ed5n \u0111\u1ecbnh. C\u1ea7n c\u1ea5u h\u00ecnh m\u1ea1nh, <a href=\"https:\/\/interdata.vn\/blog\/bang-thong-la-gi\/\">b\u0103ng th\u00f4ng<\/a> cao? <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/thue-vps\/\">Thu\u00ea VPS<\/a> uy t\u00edn t\u1eeb 3K\/ng\u00e0y v\u1edbi c\u00f4ng ngh\u1ec7 <a href=\"https:\/\/interdata.vn\/blog\/ao-hoa-la-gi\/\">\u1ea3o h\u00f3a<\/a> ti\u00ean ti\u1ebfn l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho b\u1ea1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Phan-biet-Name-Server-va-DNS\"><\/span>Ph\u00e2n bi\u1ec7t Name Server v\u00e0 DNS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Nhi\u1ec1u ng\u01b0\u1eddi th\u01b0\u1eddng nh\u1ea7m l\u1eabn ho\u1eb7c s\u1eed d\u1ee5ng thay th\u1ebf cho nhau hai thu\u1eadt ng\u1eef &#8220;Name Server&#8221; v\u00e0 &#8220;DNS&#8221;. M\u1eb7c d\u00f9 li\u00ean quan ch\u1eb7t ch\u1ebd, ch\u00fang kh\u00f4ng ho\u00e0n to\u00e0n gi\u1ed1ng nhau.<\/p>\n<p><strong>DNS (Domain Name System &#8211; H\u1ec7 th\u1ed1ng T\u00ean mi\u1ec1n)<\/strong> l\u00e0 <strong>to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng<\/strong> ph\u00e2n c\u1ea5p, ph\u00e2n t\u00e1n to\u00e0n c\u1ea7u bao g\u1ed3m c\u00e1c quy t\u1eafc, giao th\u1ee9c v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u cho ph\u00e9p chuy\u1ec3n \u0111\u1ed5i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. H\u00e3y ngh\u0129 DNS nh\u01b0 h\u1ec7 th\u1ed1ng b\u01b0u ch\u00ednh to\u00e0n c\u1ea7u.<\/p>\n<p><strong>Name Server (M\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n)<\/strong> l\u00e0 <strong>m\u1ed9t th\u00e0nh ph\u1ea7n c\u1ee5 th\u1ec3<\/strong> trong h\u1ec7 th\u1ed1ng DNS. Name Server l\u00e0 c\u00e1c m\u00e1y ch\u1ee7 v\u1eadt l\u00fd ho\u1eb7c \u1ea3o l\u01b0u tr\u1eef c\u00e1c b\u1ea3n ghi DNS (DNS records) v\u00e0 ch\u1ecbu tr\u00e1ch nhi\u1ec7m tr\u1ea3 l\u1eddi c\u00e1c truy v\u1ea5n ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n. Quay l\u1ea1i v\u00ed d\u1ee5 h\u1ec7 th\u1ed1ng b\u01b0u ch\u00ednh, Name Server gi\u1ed1ng nh\u01b0 c\u00e1c b\u01b0u c\u1ee5c c\u1ee5 th\u1ec3 x\u1eed l\u00fd th\u01b0 t\u1eeb cho m\u1ed9t khu v\u1ef1c nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<p>Nh\u01b0 v\u1eady, DNS l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng l\u1edbn bao g\u1ed3m nhi\u1ec1u lo\u1ea1i m\u00e1y ch\u1ee7 kh\u00e1c nhau (Root Server, TLD Server, Recursive Server, Authoritative Server). Name Server th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u1ec9 c\u00e1c Authoritative Name Server &#8211; n\u01a1i l\u01b0u tr\u1eef b\u1ea3n ghi g\u1ed1c cho t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n.<\/p>\n<p>Hi\u1ec3u \u0111\u01a1n gi\u1ea3n: DNS l\u00e0 h\u1ec7 th\u1ed1ng t\u1ed5ng th\u1ec3, c\u00f2n Name Server l\u00e0 c\u00e1c m\u00e1y ch\u1ee7 th\u1ef1c thi nhi\u1ec7m v\u1ee5 trong h\u1ec7 th\u1ed1ng \u0111\u00f3.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-03.jpg\" alt=\"name server 03\" width=\"750\" height=\"500\" class=\"aligncenter size-full wp-image-27785\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-03.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-03-300x200.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach-kiem-tra-Name-Server-cua-ten-mien\"><\/span>C\u00e1ch ki\u1ec3m tra Name Server c\u1ee7a t\u00ean mi\u1ec1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Bi\u1ebft \u0111\u01b0\u1ee3c Name Server hi\u1ec7n t\u1ea1i c\u1ee7a m\u1ed9t t\u00ean mi\u1ec1n l\u00e0 vi\u1ec7c h\u1eefu \u00edch, \u0111\u1eb7c bi\u1ec7t khi b\u1ea1n c\u1ea7n ki\u1ec3m tra c\u1ea5u h\u00ecnh ho\u1eb7c x\u1eed l\u00fd s\u1ef1 c\u1ed1. C\u00f3 hai c\u00e1ch ph\u1ed5 bi\u1ebfn \u0111\u1ec3 l\u00e0m vi\u1ec7c n\u00e0y:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Su-dung-cong-cu-tra-cuu-WHOIS-truc-tuyen\"><\/span>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 tra c\u1ee9u WHOIS tr\u1ef1c tuy\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/interdata.vn\/blog\/whois-la-gi\/\">WHOIS<\/a> l\u00e0 m\u1ed9t giao th\u1ee9c truy v\u1ea5n cho ph\u00e9p b\u1ea1n xem th\u00f4ng tin \u0111\u0103ng k\u00fd c\u00f4ng khai c\u1ee7a m\u1ed9t t\u00ean mi\u1ec1n, bao g\u1ed3m c\u1ea3 Name Server \u0111ang \u0111\u01b0\u1ee3c g\u00e1n cho t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n<p><strong>C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n:<\/strong><\/p>\n<ol>\n<li>Truy c\u1eadp m\u1ed9t trang web cung c\u1ea5p d\u1ecbch v\u1ee5 tra c\u1ee9u WHOIS. M\u1ed9t s\u1ed1 trang uy t\u00edn bao g\u1ed3m:\n<ul>\n<li><code><a href=\"https:\/\/interdata.vn\/blog\/giao-thuc-https-la-gi\/\">https<\/a>:\/\/lookup.icann.org\/<\/code> (Trang ch\u00ednh th\u1ee9c c\u1ee7a ICANN)<\/li>\n<li><code>https:\/\/whois.com\/<\/code><\/li>\n<li>\u0110\u1ed1i v\u1edbi t\u00ean mi\u1ec1n <code>.vn<\/code>, b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng trang c\u1ee7a VNNIC: <code>https:\/\/vnnic.vn\/whois-information<\/code><\/li>\n<\/ul>\n<\/li>\n<li>Nh\u1eadp t\u00ean mi\u1ec1n b\u1ea1n mu\u1ed1n ki\u1ec3m tra v\u00e0o \u00f4 t\u00ecm ki\u1ebfm v\u00e0 nh\u1ea5n Enter ho\u1eb7c n\u00fat &#8220;Lookup&#8221;\/&#8221;Search&#8221;.<\/li>\n<li>K\u1ebft qu\u1ea3 tr\u1ea3 v\u1ec1 s\u1ebd ch\u1ee9a nhi\u1ec1u th\u00f4ng tin v\u1ec1 t\u00ean mi\u1ec1n. T\u00ecm \u0111\u1ebfn m\u1ee5c c\u00f3 ti\u00eau \u0111\u1ec1 &#8220;Name Servers&#8221;, &#8220;Nombres de Servidor&#8221; ho\u1eb7c t\u01b0\u01a1ng t\u1ef1. T\u1ea1i \u0111\u00e2y s\u1ebd li\u1ec7t k\u00ea c\u00e1c Name Server \u0111ang \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh cho t\u00ean mi\u1ec1n \u0111\u00f3 (th\u01b0\u1eddng l\u00e0 2 ho\u1eb7c nhi\u1ec1u h\u01a1n).<\/li>\n<\/ol>\n<p>V\u00ed d\u1ee5 k\u1ebft qu\u1ea3 c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb nh\u01b0 sau: <code>Name Server: ns1.examplehost.com<\/code> <code>Name Server: ns2.examplehost.com<\/code><\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01a1n gi\u1ea3n, nhanh ch\u00f3ng v\u00e0 kh\u00f4ng y\u00eau c\u1ea7u c\u00e0i \u0111\u1eb7t g\u00ec th\u00eam.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Su-dung-Command-Prompt-Windows-hoac-Terminal-MacLinux\"><\/span>S\u1eed d\u1ee5ng Command Prompt (Windows) ho\u1eb7c Terminal (Mac\/Linux)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 d\u00f9ng m\u1ed9t c\u00f4ng c\u1ee5 d\u00f2ng l\u1ec7nh c\u00f3 s\u1eb5n tr\u00ean h\u1ea7u h\u1ebft c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/he-dieu-hanh\/\">h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/a> l\u00e0 <code>nslookup<\/code> \u0111\u1ec3 ki\u1ec3m tra Name Server.<\/p>\n<p><strong>C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n:<\/strong><\/p>\n<ol>\n<li><strong>M\u1edf Command Prompt (Windows):<\/strong> Nh\u1ea5n <code>Windows + R<\/code>, g\u00f5 <code>cmd<\/code> v\u00e0 nh\u1ea5n Enter. <strong>M\u1edf Terminal (macOS):<\/strong> M\u1edf Applications -&gt; Utilities -&gt; Terminal. <strong>M\u1edf Terminal (<a href=\"https:\/\/interdata.vn\/blog\/he-dieu-hanh-linux-la-gi\/\">Linux<\/a>):<\/strong> Th\u01b0\u1eddng c\u00f3 s\u1eb5n trong menu \u1ee9ng d\u1ee5ng ho\u1eb7c d\u00f9ng ph\u00edm t\u1eaft nh\u01b0 <code>Ctrl+Alt+T<\/code>.<\/li>\n<li>Trong c\u1eeda s\u1ed5 d\u00f2ng l\u1ec7nh, g\u00f5 l\u1ec7nh sau v\u00e0 thay <code>yourdomain.com<\/code> b\u1eb1ng t\u00ean mi\u1ec1n b\u1ea1n mu\u1ed1n ki\u1ec3m tra: <code>nslookup -type=NS yourdomain.com<\/code><\/li>\n<li>Nh\u1ea5n Enter. K\u1ebft qu\u1ea3 tr\u1ea3 v\u1ec1 s\u1ebd li\u1ec7t k\u00ea c\u00e1c Name Server (m\u1ee5c <code>nameserver = ...<\/code>) ch\u1ecbu tr\u00e1ch nhi\u1ec7m cho t\u00ean mi\u1ec1n \u0111\u00f3.<\/li>\n<\/ol>\n<p>V\u00ed d\u1ee5 output tr\u00ean Windows:<\/p>\n<pre><code class=\"language-plaintext\">Server:  UnKnown\r\nAddress:  192.168.1.1\r\n\r\nNon-authoritative answer:\r\nyourdomain.com     nameserver = ns1.examplehost.com\r\nyourdomain.com     nameserver = ns2.examplehost.com\r\n<\/code><\/pre>\n<p>L\u01b0u \u00fd r\u1eb1ng \u0111\u00f4i khi th\u00f4ng tin b\u1ea1n th\u1ea5y c\u00f3 th\u1ec3 l\u00e0 t\u1eeb b\u1ed9 nh\u1edb \u0111\u1ec7m DNS c\u1ee7a m\u00e1y b\u1ea1n ho\u1eb7c c\u1ee7a ISP. Th\u00f4ng tin t\u1eeb WHOIS th\u01b0\u1eddng l\u00e0 d\u1eef li\u1ec7u g\u1ed1c t\u1eeb c\u01a1 quan \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Huong-dan-thay-doi-Name-Server-cho-ten-mien\"><\/span>H\u01b0\u1edbng d\u1eabn thay \u0111\u1ed5i Name Server cho t\u00ean mi\u1ec1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Thay \u0111\u1ed5i Name Server l\u00e0 m\u1ed9t thao t\u00e1c qu\u1ea3n tr\u1ecb t\u00ean mi\u1ec1n c\u01a1 b\u1ea3n nh\u01b0ng quan tr\u1ecdng. Vi\u1ec7c n\u00e0y cho ph\u00e9p b\u1ea1n &#8220;ch\u1ec9&#8221; t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh \u0111\u1ebfn m\u1ed9t nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 kh\u00e1c (nh\u01b0 hosting m\u1edbi ho\u1eb7c d\u1ecbch v\u1ee5 DNS trung gian).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-04.jpg\" alt=\"name server 04\" width=\"750\" height=\"500\" class=\"aligncenter size-full wp-image-27786\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-04.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/name-server-04-300x200.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Khi-nao-can-thay-doi-Name-Server\"><\/span>Khi n\u00e0o c\u1ea7n thay \u0111\u1ed5i Name Server?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n c\u00f3 th\u1ec3 c\u1ea7n ho\u1eb7c mu\u1ed1n thay \u0111\u1ed5i Name Server trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n<ul>\n<li><strong>Chuy\u1ec3n nh\u00e0 cung c\u1ea5p hosting:<\/strong> \u0110\u00e2y l\u00e0 l\u00fd do ph\u1ed5 bi\u1ebfn nh\u1ea5t. Khi b\u1ea1n chuy\u1ec3n website sang m\u1ed9t c\u00f4ng ty hosting kh\u00e1c, b\u1ea1n c\u1ea7n c\u1eadp nh\u1eadt Name Server \u0111\u1ec3 <a href=\"https:\/\/interdata.vn\/blog\/cach-tro-ten-mien-ve-hosting\/\">tr\u1ecf t\u00ean mi\u1ec1n<\/a> \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 m\u1edbi.<\/li>\n<li><strong>S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 DNS trung gian:<\/strong> C\u00e1c d\u1ecbch v\u1ee5 nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/cloudflare-la-gi\/\">Cloudflare<\/a> cung c\u1ea5p Name Server ri\u00eang. S\u1eed d\u1ee5ng ch\u00fang c\u00f3 th\u1ec3 gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 website, c\u1ea3i thi\u1ec7n b\u1ea3o m\u1eadt (ch\u1ed1ng DDoS), v\u00e0 qu\u1ea3n l\u00fd b\u1ea3n ghi DNS linh ho\u1ea1t h\u01a1n.<\/li>\n<li><strong>S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 <a href=\"https:\/\/interdata.vn\/blog\/email-hosting-la-gi\/\">Email Hosting<\/a> ri\u00eang:<\/strong> N\u1ebfu b\u1ea1n d\u00f9ng d\u1ecbch v\u1ee5 email c\u1ee7a b\u00ean th\u1ee9 ba (nh\u01b0 Google Workspace, Microsoft 365) v\u00e0 h\u1ecd y\u00eau c\u1ea7u qu\u1ea3n l\u00fd DNS qua Name Server c\u1ee7a h\u1ecd (\u00edt ph\u1ed5 bi\u1ebfn h\u01a1n vi\u1ec7c ch\u1ec9 c\u1ea7n c\u1eadp nh\u1eadt b\u1ea3n ghi MX, CNAME, TXT).<\/li>\n<li><strong>Kh\u00f4ng h\u00e0i l\u00f2ng v\u1edbi Name Server hi\u1ec7n t\u1ea1i:<\/strong> N\u1ebfu Name Server c\u1ee7a nh\u00e0 cung c\u1ea5p hi\u1ec7n t\u1ea1i ch\u1eadm, kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c thi\u1ebfu t\u00ednh n\u0103ng b\u1ea1n c\u1ea7n.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Cac-buoc-thuc-hien-thay-doi-Name-Server\"><\/span>C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n thay \u0111\u1ed5i Name Server<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Quy tr\u00ecnh thay \u0111\u1ed5i Name Server c\u00f3 th\u1ec3 kh\u00e1c nhau \u0111\u00f4i ch\u00fat t\u00f9y v\u00e0o giao di\u1ec7n qu\u1ea3n l\u00fd c\u1ee7a t\u1eebng nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, nh\u01b0ng c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n th\u01b0\u1eddng t\u01b0\u01a1ng t\u1ef1:<\/p>\n<ol>\n<li><strong>L\u1ea5y th\u00f4ng tin Name Server m\u1edbi:<\/strong> X\u00e1c \u0111\u1ecbnh c\u1eb7p Name Server (th\u01b0\u1eddng l\u00e0 2, \u0111\u00f4i khi nhi\u1ec1u h\u01a1n) m\u00e0 b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng. Th\u00f4ng tin n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi nh\u00e0 cung c\u1ea5p hosting m\u1edbi ho\u1eb7c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS trung gian (v\u00ed d\u1ee5: <code>dns1.newprovider.com<\/code>, <code>dns2.newprovider.com<\/code>). H\u00e3y sao ch\u00e9p ch\u00ednh x\u00e1c c\u00e1c \u0111\u1ecba ch\u1ec9 n\u00e0y.<\/li>\n<li><strong>\u0110\u0103ng nh\u1eadp v\u00e0o t\u00e0i kho\u1ea3n qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n:<\/strong> Truy c\u1eadp website c\u1ee7a c\u00f4ng ty n\u01a1i b\u1ea1n \u0111\u00e3 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n (nh\u00e0 \u0111\u0103ng k\u00fd &#8211; registrar). \u0110\u0103ng nh\u1eadp b\u1eb1ng t\u00e0i kho\u1ea3n qu\u1ea3n tr\u1ecb c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>T\u00ecm m\u1ee5c qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n:<\/strong> Trong trang qu\u1ea3n tr\u1ecb, t\u00ecm \u0111\u1ebfn khu v\u1ef1c qu\u1ea3n l\u00fd danh s\u00e1ch c\u00e1c t\u00ean mi\u1ec1n b\u1ea1n s\u1edf h\u1eefu.<\/li>\n<li><strong><a href=\"https:\/\/interdata.vn\/blog\/cach-chon-ten-mien-dep\/\">Ch\u1ecdn t\u00ean mi\u1ec1n<\/a> c\u1ea7n thay \u0111\u1ed5i:<\/strong> Nh\u1ea5p v\u00e0o t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3 m\u00e0 b\u1ea1n mu\u1ed1n c\u1eadp nh\u1eadt Name Server.<\/li>\n<li><strong>T\u00ecm t\u00f9y ch\u1ecdn qu\u1ea3n l\u00fd Name Server\/DNS:<\/strong> T\u00ecm c\u00e1c m\u1ee5c c\u00f3 t\u00ean nh\u01b0 &#8220;Manage DNS&#8221;, &#8220;Change Nameservers&#8221;, &#8220;DNS Management&#8221;, &#8220;Domain Name Servers&#8221; ho\u1eb7c t\u01b0\u01a1ng t\u1ef1.<\/li>\n<li><strong>Ch\u1ecdn t\u00f9y ch\u1ecdn s\u1eed d\u1ee5ng Name Server t\u00f9y ch\u1ec9nh:<\/strong> Th\u01b0\u1eddng s\u1ebd c\u00f3 hai l\u1ef1a ch\u1ecdn: s\u1eed d\u1ee5ng Name Server m\u1eb7c \u0111\u1ecbnh c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd ho\u1eb7c nh\u1eadp Name Server t\u00f9y ch\u1ec9nh (custom nameservers). H\u00e3y ch\u1ecdn t\u00f9y ch\u1ecdn t\u00f9y ch\u1ec9nh.<\/li>\n<li><strong>Nh\u1eadp Name Server m\u1edbi:<\/strong> X\u00f3a c\u00e1c \u0111\u1ecba ch\u1ec9 Name Server c\u0169 (n\u1ebfu c\u00f3) v\u00e0 nh\u1eadp ch\u00ednh x\u00e1c c\u00e1c \u0111\u1ecba ch\u1ec9 Name Server m\u1edbi m\u00e0 b\u1ea1n \u0111\u00e3 l\u1ea5y \u1edf B\u01b0\u1edbc 1 v\u00e0o c\u00e1c \u00f4 t\u01b0\u01a1ng \u1ee9ng (NS1, NS2, v.v.). \u0110\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 kho\u1ea3ng tr\u1eafng th\u1eeba ho\u1eb7c l\u1ed7i ch\u00ednh t\u1ea3.<\/li>\n<li><strong>L\u01b0u thay \u0111\u1ed5i:<\/strong> Nh\u1ea5n n\u00fat &#8220;Save&#8221;, &#8220;Update&#8221;, &#8220;Submit&#8221; ho\u1eb7c t\u01b0\u01a1ng t\u1ef1 \u0111\u1ec3 l\u01b0u c\u1ea5u h\u00ecnh m\u1edbi.<\/li>\n<\/ol>\n<p>H\u00e3y ki\u1ec3m tra k\u1ef9 th\u00f4ng tin Name Server tr\u01b0\u1edbc khi l\u01b0u. Nh\u1eadp sai Name Server c\u00f3 th\u1ec3 khi\u1ebfn website v\u00e0 email c\u1ee7a b\u1ea1n ng\u1eebng ho\u1ea1t \u0111\u1ed9ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thay-doi-Name-Server-mat-bao-lau-de-cap-nhat-Thoi-gian-cho-DNS\"><\/span>Thay \u0111\u1ed5i Name Server m\u1ea5t bao l\u00e2u \u0111\u1ec3 c\u1eadp nh\u1eadt? (Th\u1eddi gian ch\u1edd DNS)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sau khi b\u1ea1n l\u01b0u thay \u0111\u1ed5i Name Server, c\u1ea7n m\u1ed9t kho\u1ea3ng th\u1eddi gian \u0111\u1ec3 th\u00f4ng tin n\u00e0y \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt tr\u00ean to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng DNS to\u00e0n c\u1ea7u. Qu\u00e1 tr\u00ecnh n\u00e0y g\u1ecdi l\u00e0 <strong>DNS Propagation (<a href=\"https:\/\/interdata.vn\/blog\/mang-lan\/\">Lan<\/a> truy\u1ec1n DNS)<\/strong>.<\/p>\n<p>Th\u1eddi gian lan truy\u1ec1n DNS kh\u00f4ng c\u1ed1 \u0111\u1ecbnh v\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>TTL (<a href=\"https:\/\/interdata.vn\/blog\/ttl-la-gi\/\">Time To Live<\/a>):<\/strong> Gi\u00e1 tr\u1ecb th\u1eddi gian m\u00e0 c\u00e1c m\u00e1y ch\u1ee7 DNS kh\u00e1c \u0111\u01b0\u1ee3c ph\u00e9p l\u01b0u tr\u1eef th\u00f4ng tin c\u0169 trong b\u1ed9 nh\u1edb \u0111\u1ec7m.<\/li>\n<li><strong>C\u1ea5u h\u00ecnh c\u1ee7a c\u00e1c m\u00e1y ch\u1ee7 DNS trung gian:<\/strong> C\u00e1c ISP v\u00e0 m\u00e1y ch\u1ee7 DNS c\u00f4ng c\u1ed9ng tr\u00ean kh\u1eafp \u0111\u1ecba c\u1ea7u c\u1eadp nh\u1eadt cache c\u1ee7a h\u1ecd theo c\u00e1c chu k\u1ef3 kh\u00e1c nhau.<\/li>\n<\/ul>\n<p>Th\u00f4ng th\u01b0\u1eddng, thay \u0111\u1ed5i Name Server <strong>c\u00f3 th\u1ec3 b\u1eaft \u0111\u1ea7u c\u00f3 hi\u1ec7u l\u1ef1c sau v\u00e0i ph\u00fat \u0111\u1ebfn v\u00e0i gi\u1edd<\/strong>. Tuy nhi\u00ean, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o th\u00f4ng tin \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt \u0111\u1ea7y \u0111\u1ee7 tr\u00ean to\u00e0n b\u1ed9 Internet, th\u1eddi gian ch\u1edd ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb l\u00e0 <strong>t\u1eeb 24 \u0111\u1ebfn 48 gi\u1edd<\/strong>. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p hi\u1ebfm g\u1eb7p, c\u00f3 th\u1ec3 m\u1ea5t \u0111\u1ebfn 72 gi\u1edd.<\/p>\n<p>Trong th\u1eddi gian ch\u1edd \u0111\u1ee3i, m\u1ed9t s\u1ed1 ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 truy c\u1eadp website qua Name Server m\u1edbi, trong khi nh\u1eefng ng\u01b0\u1eddi kh\u00e1c v\u1eabn th\u1ea5y trang c\u0169 (do cache DNS). B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra DNS propagation tr\u1ef1c tuy\u1ebfn (nh\u01b0 <code>dnschecker.org<\/code>) \u0111\u1ec3 theo d\u00f5i qu\u00e1 tr\u00ecnh c\u1eadp nh\u1eadt t\u1eeb nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m tr\u00ean th\u1ebf gi\u1edbi.<\/p>\n<p>H\u00e3y ki\u00ean nh\u1eabn ch\u1edd \u0111\u1ee3i \u0111\u1ee7 th\u1eddi gian lan truy\u1ec1n tr\u01b0\u1edbc khi k\u1ebft lu\u1eadn r\u1eb1ng vi\u1ec7c thay \u0111\u1ed5i c\u00f3 v\u1ea5n \u0111\u1ec1.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau-hoi-thuong-gap-ve-Name-Server-FAQ\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Name Server (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn m\u00e0 ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng g\u1eb7p khi t\u00ecm hi\u1ec3u v\u00e0 l\u00e0m vi\u1ec7c v\u1edbi Name Server:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Root-Name-Server-la-gi\"><\/span>Root Name Server l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Root Name Server (M\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n g\u1ed1c) l\u00e0 nh\u1eefng m\u00e1y ch\u1ee7 \u1edf c\u1ea5p cao nh\u1ea5t trong h\u1ec7 th\u1ed1ng ph\u00e2n c\u1ea5p DNS. Ch\u00fang kh\u00f4ng ch\u1ee9a th\u00f4ng tin chi ti\u1ebft v\u1ec1 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a website, nh\u01b0ng gi\u1eef vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng l\u00e0 \u0111\u1ecbnh h\u01b0\u1edbng c\u00e1c truy v\u1ea5n DNS \u0111\u1ebfn \u0111\u00fang TLD Name Server qu\u1ea3n l\u00fd \u0111u\u00f4i t\u00ean mi\u1ec1n (.com, .vn, <a href=\"https:\/\/interdata.vn\/blog\/ten-mien-org-la-gi\/\">.org<\/a>,&#8230;). Hi\u1ec7n c\u00f3 13 c\u1ee5m Root Server logic tr\u00ean to\u00e0n c\u1ea7u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Name-Server-mac-dinh-la-gi\"><\/span>Name Server m\u1eb7c \u0111\u1ecbnh l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Name Server m\u1eb7c \u0111\u1ecbnh (Default Nameservers) l\u00e0 c\u00e1c Name Server do nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n (n\u01a1i b\u1ea1n mua domain) cung c\u1ea5p s\u1eb5n. Khi b\u1ea1n \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n m\u1edbi, n\u00f3 th\u01b0\u1eddng t\u1ef1 \u0111\u1ed9ng \u0111\u01b0\u1ee3c g\u00e1n c\u00e1c Name Server n\u00e0y. Ch\u00fang ti\u1ec7n l\u1ee3i v\u00ec b\u1ea1n kh\u00f4ng c\u1ea7n c\u1ea5u h\u00ecnh g\u00ec th\u00eam, nh\u01b0ng c\u00f3 th\u1ec3 kh\u00f4ng cung c\u1ea5p nhi\u1ec1u t\u00ednh n\u0103ng qu\u1ea3n l\u00fd DNS n\u00e2ng cao.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lam-gi-khi-cau-hinh-sai-Name-Server\"><\/span>L\u00e0m g\u00ec khi c\u1ea5u h\u00ecnh sai Name Server?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu b\u1ea1n nghi ng\u1edd m\u00ecnh \u0111\u00e3 c\u1ea5u h\u00ecnh sai Name Server (v\u00ed d\u1ee5: website kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c sau khi thay \u0111\u1ed5i), h\u00e3y th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ol>\n<li>Ki\u1ec3m tra l\u1ea1i ch\u00ednh t\u1ea3 v\u00e0 \u0111\u1ea3m b\u1ea3o b\u1ea1n \u0111\u00e3 nh\u1eadp \u0111\u00fang \u0111\u1ecba ch\u1ec9 Name Server do nh\u00e0 cung c\u1ea5p m\u1edbi cung c\u1ea5p.<\/li>\n<li>Ch\u1edd \u0111\u1ee7 th\u1eddi gian lan truy\u1ec1n DNS (t\u1ed1i \u0111a 48 gi\u1edd).<\/li>\n<li>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 WHOIS ho\u1eb7c nslookup \u0111\u1ec3 xem Name Server n\u00e0o \u0111ang th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c g\u00e1n cho t\u00ean mi\u1ec1n.<\/li>\n<li>N\u1ebfu v\u1eabn g\u1eb7p s\u1ef1 c\u1ed1, h\u00e3y li\u00ean h\u1ec7 b\u1ed9 ph\u1eadn h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n ho\u1eb7c nh\u00e0 cung c\u1ea5p hosting\/DNS m\u1edbi \u0111\u1ec3 \u0111\u01b0\u1ee3c tr\u1ee3 gi\u00fap.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Co-bat-buoc-phai-su-dung-Name-Server-cua-nha-cung-cap-hosting-khong\"><\/span>C\u00f3 b\u1eaft bu\u1ed9c ph\u1ea3i s\u1eed d\u1ee5ng Name Server c\u1ee7a nh\u00e0 cung c\u1ea5p hosting kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng b\u1eaft bu\u1ed9c. B\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 gi\u1eef Name Server c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n v\u00e0 ch\u1ec9 c\u1ea7n c\u1eadp nh\u1eadt c\u00e1c b\u1ea3n ghi DNS (nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/ban-ghi-a-la-gi\/\">b\u1ea3n ghi A<\/a>, CNAME) \u0111\u1ec3 tr\u1ecf v\u1ec1 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a hosting m\u1edbi. Ho\u1eb7c b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Name Server c\u1ee7a m\u1ed9t b\u00ean th\u1ee9 ba chuy\u00ean v\u1ec1 DNS nh\u01b0 Cloudflare \u0111\u1ec3 qu\u1ea3n l\u00fd t\u1eadp trung v\u00e0 t\u1eadn d\u1ee5ng c\u00e1c t\u00ednh n\u0103ng b\u1ed5 sung.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Su-dung-Name-Server-cua-ben-thu-ba-nhu-Cloudflare-co-loi-ich-gi\"><\/span>S\u1eed d\u1ee5ng Name Server c\u1ee7a b\u00ean th\u1ee9 ba (nh\u01b0 Cloudflare) c\u00f3 l\u1ee3i \u00edch g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>S\u1eed d\u1ee5ng Name Server c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 DNS trung gian nh\u01b0 Cloudflare mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch:<\/p>\n<ul>\n<li><strong>T\u1ed1c \u0111\u1ed9:<\/strong> M\u1ea1ng l\u01b0\u1edbi m\u00e1y ch\u1ee7 to\u00e0n c\u1ea7u gi\u00fap ph\u00e2n gi\u1ea3i DNS nhanh h\u01a1n.<\/li>\n<li><strong>B\u1ea3o m\u1eadt:<\/strong> Cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng ch\u1ed1ng <a href=\"https:\/\/interdata.vn\/blog\/ddos-la-gi\/\">t\u1ea5n c\u00f4ng DDoS<\/a>, <a href=\"https:\/\/interdata.vn\/blog\/waf-la-gi\/\">t\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng web (WAF)<\/a>.<\/li>\n<li><strong>\u0110\u1ed9 tin c\u1eady:<\/strong> H\u1ea1 t\u1ea7ng m\u1ea1nh m\u1ebd \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n s\u00e0ng cao.<\/li>\n<li><strong>Qu\u1ea3n l\u00fd d\u1ec5 d\u00e0ng:<\/strong> Giao di\u1ec7n qu\u1ea3n l\u00fd DNS t\u1eadp trung, nhi\u1ec1u t\u00ednh n\u0103ng.<\/li>\n<li><strong>\u1ea8n \u0111\u1ecba ch\u1ec9 IP g\u1ed1c:<\/strong> Gi\u00fap b\u1ea3o v\u1ec7 m\u00e1y ch\u1ee7 hosting c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n<p>Vi\u1ec7c hi\u1ec3u v\u00e0 qu\u1ea3n l\u00fd Name Server \u0111\u00fang c\u00e1ch l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng quan tr\u1ecdng \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai v\u1eadn h\u00e0nh m\u1ed9t website hay d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn. Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 cung c\u1ea5p cho b\u1ea1n c\u00e1i nh\u00ecn chi ti\u1ebft v\u00e0 d\u1ec5 hi\u1ec3u v\u1ec1 kh\u00e1i ni\u1ec7m n\u1ec1n t\u1ea3ng n\u00e0y c\u1ee7a Internet.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Name Server \u0111\u00f3ng vai tr\u00f2 nh\u01b0 cu\u1ed1n danh b\u1ea1 c\u1ee7a Internet, gi\u00fap tr\u00ecnh duy\u1ec7t web t\u00ecm \u0111\u00fang &#8220;\u0111\u1ecba ch\u1ec9 nh\u00e0&#8221; (\u0111\u1ecba ch\u1ec9 IP) c\u1ee7a website b\u1ea1n mu\u1ed1n truy c\u1eadp t\u1eeb &#8220;t\u00ean \u0111\u01b0\u1eddng&#8221; (t\u00ean mi\u1ec1n). Hi\u1ec3u r\u00f5 Name Server l\u00e0 g\u00ec, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 qu\u1ea3n l\u00fd l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft n\u1ebfu b\u1ea1n s\u1edf h\u1eefu website<\/p>\n","protected":false},"author":2,"featured_media":27787,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-27782","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hosting"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/27782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=27782"}],"version-history":[{"count":2,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/27782\/revisions"}],"predecessor-version":[{"id":27801,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/27782\/revisions\/27801"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/27787"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=27782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=27782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=27782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}