{"id":12383503,"date":"2026-03-29T15:42:33","date_gmt":"2026-03-29T07:42:33","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%ef%bc%9a%e6%b7%b1%e5%85%a5%e8%a7%a3%e6%9e%90%e5%9f%9f%e5%90%8d%e6%b3%a8%e5%86%8c%e3%80%81%e7%ae%a1%e7%90%86%e4%b8%8edns%e9%85%8d%e7%bd%ae%e7%9a%84%e5%ae%8c\/"},"modified":"2026-03-29T15:53:43","modified_gmt":"2026-03-29T07:53:43","slug":"domain-registration-management-dns-configuration-guide-2026","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/domain\/domain-registration-management-dns-configuration-guide-2026\/","title":{"rendered":"B\u1eaft \u0111\u1ea7u t\u1eeb con s\u1ed1 kh\u00f4ng: H\u01b0\u1edbng d\u1eabn chi ti\u1ebft v\u1ec1 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, qu\u1ea3n l\u00fd v\u00e0 c\u1ea5u h\u00ecnh DNS"},"content":{"rendered":"

T\u00ean mi\u1ec1n l\u00e0 g\u00ec v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng<\/h2>\n\n\n\n

Trong th\u1ebf gi\u1edbi internet, t\u00ean mi\u1ec1n \u0111\u00f3ng vai tr\u00f2 nh\u01b0 nh\u1eefng \u0111\u1ecbnh danh \u0111\u1ecba ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c con ng\u01b0\u1eddi \u0111\u1ecdc hi\u1ec3u. V\u1ec1 b\u1ea3n ch\u1ea5t, \u0111\u00f3 l\u00e0 m\u1ed9t chu\u1ed7i k\u00fd t\u1ef1 d\u1ec5 nh\u1edb, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ee7a m\u00e1y t\u00ednh tr\u00ean m\u1ea1ng, v\u00e0 t\u01b0\u01a1ng \u1ee9ng v\u1edbi \u0111\u1ecba ch\u1ec9 IP. M\u1ed9t t\u00ean mi\u1ec1n ho\u00e0n ch\u1ec9nh, v\u00ed d\u1ee5 nh\u01b0\u2026 www.example.com<\/code>\u0110\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb nhi\u1ec1u ph\u1ea7n, c\u00e1c ph\u1ea7n n\u00e0y \u0111\u01b0\u1ee3c ng\u0103n c\u00e1ch b\u1eb1ng d\u1ea5u ch\u1ea5m (.). Ph\u1ea7n n\u1eb1m b\u00ean ph\u1ea3i c\u00f9ng (nh\u01b0\u2026) .com<\/code>\u201c.com\u201d l\u00e0 t\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t (top-level domain); c\u00e1c t\u00ean mi\u1ec1n c\u1ea5p th\u1ea5p h\u01a1n (subdomains) n\u1eb1m ngay b\u00ean tr\u00e1i n\u00f3, theo th\u1ee9 t\u1ef1.example<\/code>) v\u00e0 c\u00e1c mi\u1ec1n con c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i (www<\/code>C\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p n\u00e0y t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng cho H\u1ec7 th\u1ed1ng T\u00ean mi\u1ec1n To\u00e0n c\u1ea7u (Global Domain Name System \u2013 DNS).<\/p>\n\n\n\n

H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (Domain Name System \u2013 DNS) ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u ph\u00e2n t\u00e1n, c\u00f3 c\u1ea5u tr\u00fac ph\u00e2n t\u1ea7ng. Khi b\u1ea1n nh\u1eadp m\u1ed9t t\u00ean mi\u1ec1n v\u00e0o tr\u00ecnh duy\u1ec7t, h\u1ec7 th\u1ed1ng kh\u00f4ng tr\u1ef1c ti\u1ebfp g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u00edch. Tr\u01b0\u1edbc ti\u00ean, m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n s\u1ebd ki\u1ec3m tra b\u1ed9 nh\u1edb \u0111\u1ec7m (cache) c\u1ee5c b\u1ed9; n\u1ebfu kh\u00f4ng t\u00ecm th\u1ea5y th\u00f4ng tin c\u1ea7n thi\u1ebft, n\u00f3 s\u1ebd g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 DNS tu\u1ea7n t\u1ef1 (recursive DNS) \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh s\u1eb5n. M\u00e1y ch\u1ee7 DNS tu\u1ea7n t\u1ef1 s\u1ebd b\u1eaft \u0111\u1ea7u qu\u00e1 tr\u00ecnh truy v\u1ea5n t\u1eeb m\u00e1y ch\u1ee7 DNS g\u1ed1c (root DNS), li\u00ean t\u1ee5c h\u1ecfi c\u00e1c m\u00e1y ch\u1ee7 DNS chuy\u00ean qu\u1ea3n l\u00fd t\u1eebng c\u1ea5p \u0111\u1ed9 t\u00ean mi\u1ec1n, cho \u0111\u1ebfn khi t\u00ecm \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 IP t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u00ean mi\u1ec1n \u0111\u00f3. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 gi\u1ea3i m\u00e3 DNS (DNS resolution), gi\u00fap ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng c\u1ea7n ph\u1ea3i nh\u1edb nh\u1eefng chu\u1ed7i s\u1ed1 ph\u1ee9c t\u1ea1p m\u00e0 ch\u1ec9 c\u1ea7n nh\u1eadp t\u00ean mi\u1ec1n \u0111\u01a1n gi\u1ea3n l\u00e0 c\u00f3 th\u1ec3 truy c\u1eadp v\u00e0o trang web ho\u1eb7c d\u1ecbch v\u1ee5 c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n

Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u00ean mi\u1ec1n l\u00e0 \u0111i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft \u0111\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c \u0111\u0103ng k\u00fd v\u00e0 qu\u1ea3n l\u00fd ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c truy c\u1eadp v\u00e0o trang web m\u00e0 c\u00f2n c\u00f3 m\u1ed1i li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi nhi\u1ec1u kh\u00eda c\u1ea1nh kh\u00e1c nh\u01b0 d\u1ecbch v\u1ee5 email, b\u1ea3o m\u1eadt m\u1ea1ng, v.v. M\u1ed9t t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c ch\u1ecdn l\u1ef1a c\u1ea9n th\u1eadn v\u00e0 \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd t\u1ed1t ch\u00ednh l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean trong vi\u1ec7c x\u00e2<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u0103ng k\u00fd v\u00e0 ch\u1ecdn m\u1ed9t t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p?<\/h2>\n\n\n\n

\u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean quan tr\u1ecdng \u0111\u1ec3 b\u1eaft \u0111\u1ea7u m\u1ed9t d\u1ef1 \u00e1n tr\u1ef1c tuy\u1ebfn. Qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng bao g\u1ed3m vi\u1ec7c ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, ki\u1ec3m tra xem t\u00ean mi\u1ec1n mong mu\u1ed1n c\u00f3 s\u1eb5n hay kh\u00f4ng, ho\u00e0n t\u1ea5t vi\u1ec7c mua v\u00e0 thanh to\u00e1n ph\u00ed h\u00e0ng n\u0103m, v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 x\u00e1c minh th\u00f4ng tin quy\u1ec1n s\u1edf h\u1eefu. M\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p n\u1ed5i ti\u1ebfng nh\u01b0 GoDaddy, Namecheap, Alibaba Cloud\u2026 \u0111\u1ec1u cung c\u1ea5p giao di\u1ec7n tr\u1ef1c quan \u0111\u1ec3 ng\u01b0\u1eddi d\u00f9ng d\u1ec5 d\u00e0ng t\u00ecm ki\u1ebfm v\u00e0 mua t\u00ean mi\u1ec1n.<\/p>\n\n\n\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh chi\u1ebfn l\u01b0\u1ee3c, c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn h\u00ecnh \u1ea3nh th\u01b0\u01a1ng hi\u1ec7u, kh\u1ea3 n\u0103ng ghi nh\u1edb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 hi\u1ec7u qu\u1ea3 t\u1ed1i \u01b0u h\u00f3a tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm. M\u1ed9t t\u00ean mi\u1ec1n t\u1ed1t c\u1ea7n tu\u00e2n theo m\u1ed9t s\u1ed1 nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n: \u0110\u1ea7u ti\u00ean, n\u00f3 ph\u1ea3i ng\u1eafn g\u1ecdn v\u00e0 d\u1ec5 nh\u1edb, tr\u00e1nh s\u1eed d\u1ee5ng nh\u1eefng t\u1eeb l\u1ea1 ho\u1eb7c c\u00e1ch vi\u1ebft ph\u1ee9c t\u1ea1p; th\u1ee9 hai, n\u00f3 ph\u1ea3i li\u00ean quan m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng \u0111\u1ebfn l\u0129nh v\u1ef1c kinh doanh ho\u1eb7c t\u00ean th\u01b0\u01a1ng hi\u1ec7u; cu\u1ed1i c\u00f9ng, n\u00ean \u01b0u ti\u00ean c\u00e1c t\u00ean mi\u1ec1n top-level ph\u1ed5 bi\u1ebfn. .com<\/code>\u3001.net<\/code> Ho\u1eb7c c\u00e1c qu\u1ed1c gia\/khu v\u1ef1c nh\u01b0\u2026 .cn<\/code>B\u1edfi v\u00ec ch\u00fang quen thu\u1ed9c v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng. Ngo\u00e0i ra, n\u00ean tr\u00e1nh s\u1eed d\u1ee5ng d\u1ea5u g\u1eafn (-) v\u00e0 s\u1ed1 c\u00e0ng nhi\u1ec1u c\u00e0ng t\u1ed1t, v\u00ec ch\u00fang c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng sai l\u1ea7m khi n\u00f3i ho\u1eb7c khi nh\u1eadp d\u1eef li\u1ec7u.<\/p>\n\n\n

\n\n
\n \u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n hosting.com<\/strong>\n
Th\u00f4ng qua g\u00f3i l\u01b0u tr\u1eef chia s\u1ebb h\u00e0ng n\u0103m, nh\u1eadn t\u00ean mi\u1ec1n .com mi\u1ec5n ph\u00ed trong m\u1ed9t n\u0103m, h\u1ed7 tr\u1ee3 300+ h\u1eadu t\u1ed1 t\u00ean mi\u1ec1n, qu\u1ea3n l\u00fd DNS mi\u1ec5n ph\u00ed, h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng 24\/7<\/div>\n <\/div>\n\n
\n \n \n \"\u0110\u0103ng\n \n \n <\/a>\n \n \n Truy c\u1eadp hosting.com <\/a>\n <\/div>\n <\/div>\n\n \n\n\n\n\n\n\n

V\u1ec1 m\u1eb7t b\u1ea3o m\u1eadt t\u00ean mi\u1ec1n, vi\u1ec7c k\u00edch ho\u1ea1t d\u1ecbch v\u1ee5 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 WHOIS do nh\u00e0 \u0111\u0103ng k\u00fd cung c\u1ea5p l\u00e0 r\u1ea5t quan tr\u1ecdng. D\u1ecbch v\u1ee5 n\u00e0y gi\u00fap \u1ea9n th\u00f4ng tin li\u00ean l\u1ea1c c\u00e1 nh\u00e2n c\u1ee7a b\u1ea1n kh\u1ecfi c\u01a1 s\u1edf d\u1eef li\u1ec7u WHOIS c\u00f4ng c\u1ed9ng, t\u1eeb \u0111\u00f3 ng\u0103n ch\u1eb7n vi\u1ec7c nh\u1eadn th\u01b0 r\u00e1c, l\u1eeba \u0111\u1ea3o v\u00e0 vi\u1ec7c x\u00e2m ph\u1ea1m danh t\u00ednh. \u0110\u1ed3ng th\u1eddi, b\u1ea1n n\u00ean \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n cho nhi\u1ec1u n\u0103m li\u00ean t\u1ee5c v\u00e0 thi\u1ebft l\u1eadp t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n \u0111\u1ec3 tr\u00e1nh r\u1ee7i ro t\u00ean mi\u1ec1n h\u1ebft h\u1ea1n v\u00e0 b\u1ecb ng\u01b0\u1eddi kh\u00e1c \u0111\u0103ng k\u00fd tr\u01b0\u1edbc.<\/p>\n\n\n\n

C\u00e1c nhi\u1ec7m v\u1ee5 ch\u00ednh trong qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n<\/h2>\n\n\n\n

Sau khi \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n th\u00e0nh c\u00f4ng, vi\u1ec7c qu\u1ea3n l\u00fd ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00ean mi\u1ec1n \u0111\u00f3 s\u1ebd ti\u1ebfp t\u1ee5c ph\u1ee5c v\u1ee5 t\u1ed1t cho doanh nghi\u1ec7p c\u1ee7a b\u1ea1n trong th\u1eddi gian d\u00e0i. Qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n (control panel) cung c\u1ea5p b\u1edfi nh\u00e0 \u0111\u0103ng k\u00fd, bao g\u1ed3m<\/p>\n\n\n\n

Nhi\u1ec7m v\u1ee5 quan tr\u1ecdng nh\u1ea5t l\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c c\u1ee7a th\u00f4ng tin li\u00ean h\u1ec7. C\u00e1c th\u00f4ng tin WHOIS nh\u01b0 th\u00f4ng tin qu\u1ea3n tr\u1ecb vi\u00ean, ng\u01b0\u1eddi li\u00ean h\u1ec7 k\u1ef9 thu\u1eadt v\u00e0 ng\u01b0\u1eddi li\u00ean h\u1ec7 v\u1ec1 h\u00f3a \u0111\u01a1n ph\u1ea3i \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean, v\u00ec nh\u00e0 \u0111\u0103ng k\u00fd s\u1ebd s\u1eed d\u1ee5ng nh\u1eefng k\u00eanh n\u00e0y \u0111\u1ec3 g\u1eedi th\u00f4ng b\u00e1o quan tr\u1ecdng v\u1ec1 vi\u1ec7c gia h\u1ea1n v\u00e0 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i t\u00ean mi\u1ec1n. Ti\u1ebfp theo l\u00e0 vi\u1ec7c qu\u1ea3n l\u00fd vi\u1ec7c gia h\u1ea1n t\u00ean mi\u1ec1n. H\u00e3y ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c email nh\u1eafc nh\u1edf v\u1ec1 vi\u1ec7c gia h\u1ea1n t\u1eeb nh\u00e0 \u0111\u0103ng k\u00fd, n\u00ean b\u1eadt t\u00ednh n\u0103ng gia h\u1ea1n t\u1ef1 \u0111\u1ed9ng v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00e0i kho\u1ea3n c\u00f3 \u0111\u1ee7 s\u1ed1 d\u01b0. Sau khi t\u00ean mi\u1ec1n h\u1ebft h\u1ea1n, n\u00f3 s\u1ebd v\u00e0o giai \u0111o\u1ea1n h\u1ea1n ch\u00f3t \u0111\u1ec3 \u0111\u01b0\u1ee3c mua l\u1ea1i; trong th\u1eddi gian n\u00e0y, chi ph\u00ed mua l\u1ea1i s\u1ebd r\u1ea5t cao v\u00e0 c\u00f3 nguy c\u01a1 b\u1ecb ng\u01b0\u1eddi kh\u00e1c \u0111\u0103ng k\u00fd tr\u01b0\u1edbc.<\/p>\n\n\n\n

Vi\u1ec7c chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n c\u0169ng l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 qu\u1ea3n l\u00fd quan tr\u1ecdng. B\u1ea1n c\u00f3 th\u1ec3 mu\u1ed1n chuy\u1ec3n t\u00ean mi\u1ec1n t\u1eeb nh\u00e0 \u0111\u0103ng k\u00fd hi\u1ec7n t\u1ea1i sang nh\u00e0 \u0111\u0103ng k\u00fd kh\u00e1c v\u00ec nhi\u1ec1u l\u00fd do nh\u01b0 gi\u00e1 c\u1ea3, d\u1ecbch v\u1ee5 ho\u1eb7c t\u00ednh n\u0103ng c\u1ee7a n\u1ec1n t\u1ea3ng. Qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi t\u00ean mi\u1ec1n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd trong v\u00f2ng h\u01a1n 60 ng\u00e0y v\u00e0 kh\u00f4ng \u0111ang trong tr\u1ea1ng th\u00e1i b\u1ecb kh\u00f3a. B\u1ea1n c\u1ea7n l\u1ea5y m\u00e3 x\u00e1c th\u1ef1c chuy\u1ec3n nh\u01b0\u1ee3ng t\u1eeb nh\u00e0 \u0111\u0103ng k\u00fd hi\u1ec7n t\u1ea1i, sau \u0111\u00f3 th\u1ef1c hi\u1ec7n th\u1ee7 t\u1ee5c chuy\u1ec3n nh\u01b0\u1ee3ng t\u1ea1i nh\u00e0 \u0111\u0103ng k\u00fd m\u1edbi. Trong th\u1eddi gian chuy\u1ec3n nh\u01b0\u1ee3ng, vi\u1ec7c gi\u1ea3i quy\u1ebft DNS c\u1ee7a t\u00ean mi\u1ec1n th\u01b0\u1eddng s\u1ebd kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n, tuy nhi\u00ean to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh c\u00f3 th\u1ec3 m\u1ea5t v\u00e0i ng\u00e0y \u0111\u1ec3 ho\u00e0n t\u1ea5t.<\/p>\n\n\n\n

Ngo\u00e0i ra, vi\u1ec7c t\u1ea1o v\u00e0 qu\u1ea3n l\u00fd c\u00e1c t\u00ean mi\u1ec1n con c\u0169ng thu\u1ed9c ph\u1ea1m vi qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n. B\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o c\u00e1c t\u00ean mi\u1ec1n con cho c\u00e1c ph\u1ea7n kh\u00e1c nhau c\u1ee7a trang web c\u1ee7a m\u00ecnh. blog.example.com<\/code> \u6216 shop.example.com<\/code>V\u00e0 th\u00f4ng qua c\u00e1c b\u1ea3n ghi DNS (Domain Name System), ch\u00fang \u0111\u01b0\u1ee3c \u0111\u1ecbnh h\u01b0\u1edbng \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP c\u1ee5 th\u1ec3 c\u1ee7a m\u00e1y ch\u1ee7 ho\u1eb7c d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n

C\u1ea5u h\u00ecnh v\u00e0 gi\u1ea3i quy\u1ebft b\u1ea3n ghi DNS<\/h2>\n\n\n\n

DNS (Domain Name System) l\u00e0 c\u00f4ng c\u1ee5 gi\u00fap \u0111\u1ecbnh tuy\u1ebfn c\u00e1c truy c\u1eadp internet \u0111\u1ebfn \u0111\u00fang m\u00e1y ch\u1ee7 web ho\u1eb7c d\u1ecbch v\u1ee5 m\u1ea1ng t\u01b0\u01a1ng \u1ee9ng. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp c\u00e1c lo\u1ea1i b\u1ea3n ghi DNS kh\u00e1c nhau tr\u00ean m\u00e1y ch\u1ee7 DNS ch\u00ednh th\u1ee9c c\u1ee7a t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n. Vi\u1ec7c hi\u1ec3u r\u00f5 v\u00e0 c\u1ea5u h\u00ecnh \u0111\u00fang c\u00e1c b\u1ea3n ghi DNS r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o trang web c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy c\u1eadp b\u00ecnh th\u01b0\u1eddng v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 ho\u1ea1t \u0111\u1ed9ng m\u00e0 kh\u00f4ng g\u1eb7p s\u1ef1 c\u1ed1.<\/p>\n\n\n\n

C\u00e1c lo\u1ea1i b\u1ea3n ghi DNS ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m b\u1ea3n ghi A (A Record), b\u1ea3n ghi CNAME (CNAME Record), b\u1ea3n ghi MX (MX Record) v\u00e0 b\u1ea3n ghi TXT (TXT Record). B\u1ea3n ghi A l\u00e0 lo\u1ea1i b\u1ea3n ghi c\u01a1 b\u1ea3n nh\u1ea5t; n\u00f3 thi\u1ebft l\u1eadp m\u1ed1i li\u00ean k\u1ebft tr\u1ef1c ti\u1ebfp gi\u1eefa t\u00ean mi\u1ec1n v\u00e0 \u0111\u1ecba ch\u1ec9 IP lo\u1ea1i IPv4. V\u00ed d\u1ee5, khi b\u1ea1n mu\u1ed1n \u0111\u1ecbnh tuy\u1ebfn email \u0111\u1ebfn m\u1ed9t m\u00e1y ch\u1ee7 c\u1ee5 th\u1ec3, b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng @<\/code>(\u0110\u1ea1i di\u1ec7n cho t\u00ean mi\u1ec1n g\u1ed1c) ho\u1eb7c www<\/code> \u0110\u00f3 l\u00e0 \u0111\u1ecba ch\u1ec9 IP tr\u1ecf \u0111\u1ebfn m\u00e1y ch\u1ee7 web c\u1ee7a b\u1ea1n. B\u1ea3n ghi CNAME (Canonical Name Record) d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn m\u1ed9t t\u00ean mi\u1ec1n sang m\u1ed9t t\u00ean mi\u1ec1n kh\u00e1c, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP. V\u00ed d\u1ee5, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ea3n ghi CNAME \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng truy c\u1eadp t\u1eeb t\u00ean mi\u1ec1n n\u00e0y sang t\u00ean mi\u1ec1n kh\u00e1c. www.example.com<\/code> \u0110\u1eb7t th\u00e0nh example.com<\/code> CNAME c\u1ee7a, nh\u01b0 v\u1eady khi example.com<\/code> Khi \u0111\u1ecba ch\u1ec9 IP thay \u0111\u1ed5i,www<\/code> C\u00e1c b\u1ea3n ghi s\u1ebd \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt t\u1ef1 \u0111\u1ed9ng theo th\u1eddi gian.<\/p>\n\n\n\n

MX (Mail Exchange) record ch\u1ecbu tr\u00e1ch nhi\u1ec7m cho vi\u1ec7c trao \u0111\u1ed5i th\u01b0 \u0111i\u1ec7n t\u1eed; n\u00f3 x\u00e1c \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 c\u1ee7a m\u00e1y ch\u1ee7 email nh\u1eadn th\u01b0 cho t\u00ean mi\u1ec1n \u0111\u00f3. Th\u1ee9 t\u1ef1 \u01b0u ti\u00ean trong c\u1ea5u h\u00ecnh MX r\u1ea5t quan tr\u1ecdng \u2013 s\u1ed1 gi\u00e1 tr\u1ecb c\u00e0ng nh\u1ecf th\u00ec m\u1ee9c \u0111\u1ed9 \u01b0u ti\u00ean c\u00e0ng cao. TXT (Text) record \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u01b0u tr\u1eef th\u00f4ng tin v\u0103n b\u1ea3n, v\u00e0 m\u1ee5c \u0111\u00edch ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 l\u01b0u tr\u1eef th\u00f4ng tin SPF (Sender Policy Framework) c\u1ee7a t\u00ean mi\u1ec1n (nh\u1eb1m ng\u0103n ch\u1eb7n vi\u1ec7c g\u1eedi th\u01b0 r\u00e1c gi\u1ea3 m\u1ea1o) c\u0169ng nh\u01b0 th\u00f4ng tin x\u00e1c th\u1ef1c quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n (d\u00f9ng cho c\u00e1c c\u00f4ng c\u1ee5 qu\u1ea3n tr\u1ecb trang web ho\u1eb7c trong qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c ch\u1ee9ng ch\u1ec9 SSL).<\/p>\n\n\n

\n\n
\n \u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n UltaHost<\/strong>\n
H\u01a1n 300 \u0111u\u00f4i t\u00ean mi\u1ec1n, ch\u1ecdn g\u00f3i l\u01b0u tr\u1eef h\u00e0ng n\u0103m, t\u1eadn h\u01b0\u1edfng t\u00ean mi\u1ec1n mi\u1ec5n ph\u00ed! Chuy\u1ec3n t\u00ean mi\u1ec1n sang Ultahost \u0111\u1ec3 \u0111\u01b0\u1ee3c gia h\u1ea1n mi\u1ec5n ph\u00ed m\u1ed9t n\u0103m, .com $9.49 n\u0103m \u0111\u1ea7u ti\u00ean<\/div>\n <\/div>\n\n
\n \n \n \"\u0110\u0103ng\n \n \n <\/a>\n \n \n Truy c\u1eadp UltaHost <\/a>\n <\/div>\n <\/div>\n\n \n\n\n\n\n\n\n

Vi\u1ec7c s\u1eeda \u0111\u1ed5i c\u00e1c b\u1ea3n ghi DNS (Domain Name System) kh\u00f4ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng ngay l\u1eadp t\u1ee9c tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. Do c\u01a1 ch\u1ebf \u0111\u1ec7m (cache) c\u1ee7a DNS, nh\u1eefng thay \u0111\u1ed5i c\u1ea7n th\u1eddi gian \u0111\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i; qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201ckhu\u1ebfch t\u00e1n\u201d (propagation), th\u01b0\u1eddng m\u1ea5t t\u1eeb v\u00e0i ph\u00fat \u0111\u1ebfn 48 gi\u1edd. C\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y (cloud services) v\u00e0 CDN (Content Delivery Network) hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng y\u00eau c\u1ea7u b\u1ea1n ch\u1ec9 \u0111\u1ecbnh c\u00e1c m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n (DNS name servers) c\u1ee7a m\u00ecnh sang \u0111\u1ecba ch\u1ec9 do h\u1ecd cung c\u1ea5p, nh\u1eb1m gi\u00fap h\u1ecd qu\u1ea3n l\u00fd c\u00e1c lu\u1ed3ng gi\u1ea3i quy\u1ebft (resolution routes) ph\u1ee9c t\u1ea1p h\u01a1n cho b\u1ea1n.<\/p>\n\n\n\n

T\u00f3m l\u1ea1i<\/h2>\n\n\n\n

T\u00ean mi\u1ec1n l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Internet, \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t li\u00ean k\u1ebft quan tr\u1ecdng t\u1eeb kh\u00eda c\u1ea1nh k\u1ef9 thu\u1eadt \u0111\u1ebfn h\u00ecnh \u1ea3nh th\u01b0\u01a1ng hi\u1ec7u. B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng to\u00e0n b\u1ed9 quy tr\u00ecnh, t\u1eeb vi\u1ec7c hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u00ean mi\u1ec1n, \u0111\u0103ng k\u00fd ch\u00fang m\u1ed9t c\u00e1ch th\u00f4ng minh, qu\u1ea3n l\u00fd ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 cho \u0111\u1ebfn vi\u1ec7c thi\u1ebft l\u1eadp c\u1ea5u h\u00ecnh DNS chuy\u00ean nghi\u1ec7p. M\u1ed9t d\u1ef1 \u00e1n tr\u1ef1c tuy\u1ebfn th\u00e0nh c\u00f4ng b\u1eaft \u0111\u1ea7u v\u1edbi m\u1ed9t t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn c\u1ea9n th\u1eadn v\u00e0 \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd t\u1ed1t; s\u1ef1 hi\u1ec3u bi\u1ebft s\u00e2u r\u1ed9ng v\u1ec1 c\u01a1 ch\u1ebf DNS \u0111\u1eb1ng sau n\u00f3 l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh, b\u1ea3o m\u1eadt v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng c\u1ee7a d\u1ecbch v\u1ee5. B\u1eb1ng c\u00e1ch n\u1eafm v\u1eefng nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 th\u1ec3 t\u1ef1 tin ki\u1ec3m so\u00e1t \u201c\u0111\u1ecba ch\u1ec9 s\u1ed1\u201d c\u1ee7a m\u00ecnh v\u00e0 t\u1ea1o n\u00ean m\u1ed9t n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho b\u1ea5t k\u1ef3 doanh nghi\u1ec7p tr\u1ef1c tuy\u1ebfn n\u00e0o.<\/p>\n\n\n\n

FAQ \u5e38\u89c1\u95ee\u9898<\/h2>\n\n\n\n

T\u00ean mi\u1ec1n ### s\u1ebd c\u00f3 hi\u1ec7u l\u1ef1c sau bao l\u00e2u k\u1ec3 t\u1eeb khi \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd?<\/p>\n\n\n\n

Vi\u1ec7c \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n th\u01b0\u1eddng c\u00f3 hi\u1ec7u l\u1ef1c ngay l\u1eadp t\u1ee9c ho\u1eb7c trong v\u00f2ng v\u00e0i ph\u00fat. Sau khi b\u1ea1n ho\u00e0n t\u1ea5t vi\u1ec7c thanh to\u00e1n v\u00e0 \u0111\u0103ng k\u00fd th\u00e0nh c\u00f4ng, th\u00f4ng tin t\u00ean mi\u1ec1n s\u1ebd \u0111\u01b0\u1ee3c nh\u1eadp ngay v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a c\u01a1 quan \u0111\u0103ng k\u00fd. Tuy nhi\u00ean, do c\u01a1 ch\u1ebf l\u01b0u tr\u1eef d\u1eef li\u1ec7u (cache) v\u00e0 truy\u1ec1n ph\u00e1t th\u00f4ng tin trong h\u1ec7 th\u1ed1ng DNS to\u00e0n c\u1ea7u, t\u00ean mi\u1ec1n m\u1edbi \u0111\u0103ng k\u00fd c\u00f3 th\u1ec3 m\u1ea5t v\u00e0i gi\u1edd \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft (\u89e3\u6790) ho\u00e0n to\u00e0n tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. Trong th\u1eddi gian n\u00e0y, ng\u01b0\u1eddi d\u00f9ng \u1edf c\u00e1c v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd kh\u00e1c nhau c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i t\u00ecnh tr\u1ea1ng kh\u00f4ng th\u1ec3 truy c\u1eadp v\u00e0o trang web, v\u00e0 \u0111\u00e2y l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o n\u1ebfu t\u00ean mi\u1ec1n c\u1ee7a t\u00f4i b\u1ecb ng\u01b0\u1eddi kh\u00e1c \u0111\u0103ng k\u00fd tr\u01b0\u1edbc?<\/h3>\n\n\n\n

N\u1ebfu b\u1ea1n ph\u00e1t hi\u1ec7n r\u1eb1ng t\u00ean mi\u1ec1n m\u00e0 m\u00ecnh mu\u1ed1n \u0111\u00e3 \u0111\u01b0\u1ee3c ng\u01b0\u1eddi kh\u00e1c \u0111\u0103ng k\u00fd, tr\u01b0\u1edbc ti\u00ean b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 tra c\u1ee9u WHOIS \u0111\u1ec3 xem th\u00f4ng tin \u0111\u0103ng k\u00fd v\u00e0 ng\u00e0y h\u1ebft h\u1ea1n c\u1ee7a t\u00ean mi\u1ec1n \u0111\u00f3. B\u1ea1n c\u00f3 th\u1ec3 th\u1eed li\u00ean h\u1ec7 v\u1edbi ng\u01b0\u1eddi hi\u1ec7n \u0111ang s\u1edf h\u1eefu t\u00ean mi\u1ec1n th\u00f4ng qua th\u00f4ng tin li\u00ean l\u1ea1c \u0111\u01b0\u1ee3c cung c\u1ea5p, \u0111\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng mua l\u1ea1i; qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 giao d\u1ecbch m\u00f4i gi\u1edbi t\u00ean mi\u1ec1n. M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c l\u00e0 theo d\u00f5i ng\u00e0y h\u1ebft h\u1ea1n c\u1ee7a t\u00ean mi\u1ec1n v\u00e0 c\u1ed1 g\u1eafng \u0111\u0103ng k\u00fd l\u1ea1i sau khi n\u00f3 b\u1ecb x\u00f3a, tuy nhi\u00ean \u0111i\u1ec1u n\u00e0y c\u00f3 t\u00ednh ch\u1ea5t kh\u00f4ng ch\u1eafc ch\u1eafn v\u00e0 c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u ng\u01b0\u1eddi kh\u00e1c c\u00f9ng tranh gi\u00e0nh. \u0110\u1ed1i v\u1edbi c\u00e1c t\u00ean mi\u1ec1n thu\u1ed9c th\u01b0\u01a1ng hi\u1ec7u quan tr\u1ecdng, vi\u1ec7c ph\u00f2ng ng\u1eeba lu\u00f4n t\u1ed1t h\u01a1n l\u00e0 kh\u1eafc ph\u1ee5c; vi\u1ec7c \u0111\u0103ng k\u00fd s\u1edbm c\u00e1c bi\u1ebfn th\u1ec3 c\u1ee7a t\u00ean mi\u1ec1n \u0111\u00f3 l\u00e0 m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn.<\/p>\n\n\n\n

L\u1ed7i s\u1eeda \u0111\u1ed5i b\u1ea3n ghi DNS khi\u1ebfn trang web kh\u00f4ng th\u1ec3 truy c\u1eadp ph\u1ea3i l\u00e0m sao?<\/h3>\n\n\n\n

N\u1ebfu s\u1ef1 c\u1ed1 v\u1edbi trang web ho\u1eb7c d\u1ecbch v\u1ee5 x\u1ea3y ra do l\u1ed7i c\u1ea5u h\u00ecnh b\u1ea3n ghi DNS, b\u1ea1n c\u1ea7n ngay l\u1eadp t\u1ee9c \u0111\u0103ng nh\u1eadp v\u00e0o b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n ho\u1eb7c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef DNS \u0111\u1ec3 s\u1eeda ch\u1eefa. H\u00e3y thay \u0111\u1ed5i gi\u00e1 tr\u1ecb b\u1ea3n ghi sai th\u00e0nh \u0111\u1ecba ch\u1ec9 IP m\u00e1y ch\u1ee7 ch\u00ednh x\u00e1c ho\u1eb7c t\u00ean mi\u1ec1n \u0111\u00edch. Sau khi th\u1ef1c hi\u1ec7n thay \u0111\u1ed5i, h\u00e3y ki\u00ean nh\u1eabn ch\u1edd qu\u00e1 tr\u00ecnh truy\u1ec1n b\u00e1 b\u1ea3n ghi DNS \u0111\u01b0\u1ee3c ho\u00e0n t\u1ea5t. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra truy\u1ec1n b\u00e1 DNS to\u00e0n c\u1ea7u tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 xem t\u00ecnh tr\u1ea1ng m\u1edbi c\u1ee7a c\u00e1c thi\u1ebft l\u1eadp \u0111ang c\u00f3 hi\u1ec7u l\u1ef1c tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. \u0110\u1ec3 ph\u1ee5c h\u1ed3i nhanh ch\u00f3ng, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1m th\u1eddi gi\u1ea3m gi\u00e1 tr\u1ecb TTL (th\u1eddi gian t\u1ed3n t\u1ea1i c\u1ee7a b\u1ea3n ghi DNS) \u0111\u1ec3 qu\u00e1 tr\u00ecnh thay \u0111\u1ed5i di\u1ec5n ra nhanh h\u01a1n; tuy nhi\u00ean, h\u00e3y nh\u1edb \u0111i\u1ec1u ch\u1ec9nh gi\u00e1 tr\u1ecb TTL tr\u1edf l\u1ea1i m\u1ee9c b\u00ecnh th\u01b0\u1eddng sau khi thay \u0111\u1ed5i ho\u00e0n t\u1ea5t.<\/p>\n\n

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\r\n\t\t\t\t\t\u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n Bluehost<\/strong>\r\n\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\tH\u1ed7 tr\u1ee3 tr\u00ecnh t\u1ea1o t\u00ean mi\u1ec1n AI, d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 24\/7<\/span>\r\n\t\t\t\t
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T\u1ea1o t\u00ean mi\u1ec1n b\u1eb1ng AI<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp Bluehost \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u2192<\/a>\r\n\t\t\t\t\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t<\/div>\r\n\t\t\r\n\t\r\n\t
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\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"WordPress.com\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t
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\r\n\t\t\t\t\tWordPress.com \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n<\/strong>\r\n\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\tCh\u1ecdn g\u00f3i cao c\u1ea5p nh\u1ea5t \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m gi\u00e1 l\u00ean \u0111\u1ebfn 69% + mi\u1ec5n ph\u00ed chuy\u1ec3n t\u00ean mi\u1ec1n, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd t\u1eeb .com, .blog v\u00e0 h\u01a1n 350 \u0111u\u00f4i t\u00ean mi\u1ec1n kh\u00e1c.<\/span>\r\n\t\t\t\t
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Mua g\u00f3i thanh to\u00e1n h\u00e0ng n\u0103m, t\u00ean mi\u1ec1n mi\u1ec5n ph\u00ed n\u0103m \u0111\u1ea7u ti\u00ean<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp \u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n WordPress.com \u2192<\/a>\r\n\t\t\t\t\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t<\/div>\r\n\t\t\r\n<\/div>\r\n\r\n\r\n\n\n\n\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 bi\u1ebft li\u1ec7u DNS c\u1ee7a t\u00ean mi\u1ec1n c\u1ee7a t\u00f4i c\u00f3 b\u1ecb chi\u1ebfm \u0111o\u1ea1t hay kh\u00f4ng?<\/h3>\n\n\n\n

C\u00e1c d\u1ea5u hi\u1ec7u ph\u1ed5 bi\u1ebfn c\u1ee7a vi\u1ec7c t\u1ea5n c\u00f4ng DNS \u0111\u1ed1i v\u1edbi t\u00ean mi\u1ec1n bao g\u1ed3m: kh\u00f4ng th\u1ec3 truy c\u1eadp v\u00e0o trang web c\u1ee7a m\u00ecnh \u0111\u1ed9t ng\u1ed9t, ho\u1eb7c b\u1ecb chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn m\u1ed9t trang web ho\u00e0n to\u00e0n kh\u00f4ng li\u00ean quan khi truy c\u1eadp; n\u1ed9i dung trang web b\u1ecb s\u1eeda \u0111\u1ed5i; ph\u00e1t hi\u1ec7n c\u00e1c b\u1ea3n ghi DNS kh\u00f4ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 DNS m\u00e0 b\u1ea1n kh\u00f4ng \u0111ang s\u1eed d\u1ee5ng, v.v. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 d\u00f2ng l\u1ec7nh (ch\u1eb3ng h\u1ea1n nh\u01b0 tr\u00ean Windows) \u0111\u1ec3 ki\u1ec3m tra v\u00e0 ph\u00e1t hi\u1ec7n nh\u1eefng d\u1ea5u hi\u1ec7u n\u00e0y.nslookup<\/code>ho\u1eb7c cho macOS\/Linuxdig<\/code>H\u00e3y ki\u1ec3m tra t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n v\u00e0 xem \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c tr\u1ea3 v\u1ec1 c\u00f3 ph\u1ea3i l\u00e0 \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 m\u00e0 b\u1ea1n \u0111\u00e3 t\u1ef1 c\u1ea5u h\u00ecnh hay kh\u00f4ng. H\u00e3y ki\u1ec3m tra l\u1ea1i c\u00e1c b\u1ea3n ghi DNS c\u1ee7a t\u00ean mi\u1ec1n \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e0i \u0111\u1eb7t m\u00e1y ch\u1ee7 t\u00ean (name server) kh\u00f4ng b\u1ecb thay \u0111\u1ed5i m\u1ed9t c\u00e1ch tr\u00e1i ph\u00e9p; \u0111\u00e2y l\u00e0 bi\u1ec7n ph\u00e1p quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c t\u00ean mi\u1ec1n b\u1ecb chi\u1ebfm \u0111o\u1ea1t. Vi\u1ec7c k\u00edch ho\u1ea1t c\u00e1c c\u00f4ng ngh\u1ec7 b\u1ea3o m\u1eadt nh\u01b0 DNS Security Extensions (DNSSEC) c\u0169ng c\u00f3 th\u1ec3 cung c\u1ea5p th\u00eam l\u1edbp b\u1ea3o<\/p>","protected":false},"excerpt":{"rendered":"

B\u00e0i vi\u1ebft n\u00e0y l\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 t\u00ean mi\u1ec1n (domain names) v\u00e0 h\u1ec7 th\u1ed1ng DNS (Domain Name System). N\u00f3 b\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch gi\u1ea3i th\u00edch kh\u00e1i ni\u1ec7m v\u1ec1 t\u00ean mi\u1ec1n v\u00e0 c\u00e1ch ch\u00fang \u0111\u01b0\u1ee3c gi\u1ea3i m\u00e3 th\u00f4ng qua h\u1ec7 th\u1ed1ng DNS, sau \u0111\u00f3 h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch \u0111\u0103ng k\u00fd v\u00e0 l\u1ef1a ch\u1ecdn m\u1ed9t t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p. Ti\u1ebfp theo, b\u00e0i vi\u1ebft tr\u00ecnh b\u00e0y c\u00e1c nhi\u1ec7m v\u1ee5 quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n, v\u00e0 cu\u1ed1i c\u00f9ng gi\u1edbi thi\u1ec7u c\u00e1c lo\u1ea1i b\u1ea3n ghi DNS c\u01a1 b\u1ea3n c\u00f9ng c\u00e1ch c\u1ea5u h\u00ecnh ch\u00fang, gi\u00fap ng\u01b0\u1eddi \u0111\u1ecdc n\u1eafm v\u1eefng to\u00e0n b\u1ed9 quy tr\u00ecnh t\u1eeb vi\u1ec7c \u0111\u0103ng k\u00fd \u0111\u1ebfn vi\u1ec7c gi\u1ea3i m\u00e3 t\u00ean mi\u1ec1n.<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"knowledge_category":[279],"class_list":["post-12383503","knowledge_post","type-knowledge_post","status-publish","hentry","knowledge_category-domain"],"acf":{"site_seo_keywords":"\u57df\u540d\u6ce8\u518c\uff0c\u57df\u540d\u7ba1\u7406\uff0cDNS\u914d\u7f6e\uff0cDNS\u89e3\u6790\uff0c\u57df\u540d\u7cfb\u7edf\uff0c\u5982\u4f55\u9009\u62e9\u57df\u540d\uff0c\u57df\u540d\u5b89\u5168\u8bbe\u7f6e\uff0cDNS\u8bb0\u5f55\u7c7b\u578b"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12383503","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts"}],"about":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/types\/knowledge_post"}],"author":[{"embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/users\/7"}],"version-history":[{"count":0,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12383503\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12383503"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12383503"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12383503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}