{"id":12377473,"date":"2026-03-19T08:36:03","date_gmt":"2026-03-19T00:36:03","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%8e%e8%a7%a3%e6%9e%90%e7%9a%84%e5%85%a8%e6%b5%81\/"},"modified":"2026-03-19T08:39:57","modified_gmt":"2026-03-19T00:39:57","slug":"domain-registration-management-dns-guide-12377473","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/domain\/domain-registration-management-dns-guide-12377473\/","title":{"rendered":"B\u1eaft \u0111\u1ea7u t\u1eeb con s\u1ed1 kh\u00f4ng: H\u01b0\u1edbng d\u1eabn chi ti\u1ebft v\u1ec1 to\u00e0n b\u1ed9 quy tr\u00ecnh \u0111\u0103ng k\u00fd, qu\u1ea3n l\u00fd v\u00e0 gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n"},"content":{"rendered":"

Vi\u1ec7c ch\u1ecdn m\u1ed9t t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean trong qu\u00e1 tr\u00ecnh tri\u1ec3n khai b\u1ea5t k\u1ef3 d\u1ef1 \u00e1n tr\u1ef1c tuy\u1ebfn n\u00e0o. T\u00ean mi\u1ec1n kh\u00f4ng ch\u1ec9 \u0111\u1ea1i di\u1ec7n cho \u0111\u1ecba ch\u1ec9 trang web c\u1ee7a b\u1ea1n tr\u00ean internet, m\u00e0 c\u00f2n l\u00e0 \u1ea5n t\u01b0\u1ee3ng \u0111\u1ea7u ti\u00ean v\u1ec1 th\u01b0\u01a1ng hi\u1ec7u v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. M\u1ed9t t\u00ean mi\u1ec1n ng\u1eafn g\u1ecdn, d\u1ec5 nh\u1edb v\u00e0 li\u00ean quan \u0111\u1ebfn n\u1ed9i dung c\u1ee7a trang web s\u1ebd gi\u00fap t\u0103ng l\u01b0\u1ee3ng truy c\u1eadp t\u1eeb ng\u01b0\u1eddi d\u00f9ng v\u00e0 t\u1ea1o n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho s\u1ef1 ph\u00e1t tri\u1ec3n l\u00e2u d\u00e0i c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n\n\n\n

T\u00ean mi\u1ec1n bao g\u1ed3m hai ph\u1ea7n ch\u00ednh: ph\u1ea7n ch\u00ednh c\u1ee7a t\u00ean mi\u1ec1n v\u00e0 ph\u1ea7n t\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t. V\u00ed d\u1ee5, trong \u201cexample.com\u201d, \u201cexample\u201d l\u00e0 ph\u1ea7n t\u00ean mi\u1ec1n c\u1ea5p hai do b\u1ea1n t\u1ef1 \u0111\u1ecbnh, c\u00f2n \u201c.com\u201d l\u00e0 ph\u1ea7n t\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t. C\u00e1c ph\u1ea7n t\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c chia th\u00e0nh hai nh\u00f3m l\u1edbn: c\u00e1c t\u00ean mi\u1ec1n c\u1ea5p cao ph\u1ed5 th\u00f4ng (generic top-level domains \u2013 GTLDs), nh\u01b0 .com, .net, .org; v\u00e0 c\u00e1c t\u00ean mi\u1ec1n c\u1ea5p cao theo qu\u1ed1c gia ho\u1eb7c khu v\u1ef1c (country-code top-level domains \u2013 ccTLDs), nh\u01b0 .cn, .uk.<\/p>\n\n\n\n

Sau khi ho\u00e0n th\u00e0nh vi\u1ec7c x\u00e2y d\u1ef1ng \u00fd t\u01b0\u1edfng, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 ki\u1ec3m tra t\u00ednh kh\u1ea3 d\u1ee5ng c\u1ee7a t\u00ean mi\u1ec1n b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng th\u00f4ng qua c\u00f4ng c\u1ee5 \u201cWHOIS\u201d. WHOIS l\u00e0 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f4ng khai, l\u01b0u tr\u1eef th\u00f4ng tin v\u1ec1 ch\u1ee7 s\u1edf h\u1eefu, th\u00f4ng tin li\u00ean l\u1ea1c v\u00e0 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n. N\u1ebfu k\u1ebft qu\u1ea3 truy v\u1ea5n cho th\u1ea5y t\u00ean mi\u1ec1n \u0111\u00f3 ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd, b\u1ea1n c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh \u0111\u0103ng k\u00fd n\u00f3.<\/p>\n\n\n\n

C\u00e1c b\u01b0\u1edbc chi ti\u1ebft \u0111\u1ec3 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n:<\/h2>\n\n\n\n

\u0110\u1ec3 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, b\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c ICANN ch\u1ee9ng nh\u1eadn ho\u1eb7c \u0111\u1ea1i l\u00fd c\u1ee7a h\u1ecd. Qu\u00e1 tr\u00ecnh n\u00e0y c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n, nh\u01b0ng l\u1ea1i bao g\u1ed3m m\u1ed9t s\u1ed1 l\u1ef1a ch\u1ecdn v\u00e0 thao t\u00e1c quan tr\u1ecdng m\u00e0 b\u1ea1n c\u1ea7n xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng.<\/p>\n\n\n\n

C\u00e1ch ch\u1ecdn nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u0111\u00e1ng tin c\u1eady<\/h3>\n\n\n\n

Khi l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, b\u1ea1n kh\u00f4ng n\u00ean ch\u1ec9 xem x\u00e9t \u0111\u1ebfn y\u1ebfu t\u1ed1 gi\u00e1 c\u1ea3. C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a d\u1ecbch v\u1ee5, ch\u1ea5t l\u01b0\u1ee3ng ch\u0103m s\u00f3c kh\u00e1ch h\u00e0ng, s\u1ef1 d\u1ec5 d\u00e0ng khi s\u1eed d\u1ee5ng giao di\u1ec7n qu\u1ea3n tr\u1ecb, c\u00e1c d\u1ecbch v\u1ee5 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0, v\u00e0 gi\u00e1 c\u1ea3 gia h\u1ea1n sau n\u00e0y \u0111\u1ec1u r\u1ea5t quan tr\u1ecdng. M\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n qu\u1ed1c t\u1ebf c\u00f3 uy t\u00edn cung c\u1ea5p d\u1ecbch v\u1ee5 to\u00e0n di\u1ec7n v\u1edbi m\u1ee9c gi\u00e1 c\u1ea1nh tranh, trong khi c\u00e1c nh\u00e0 cung c\u1ea5p trong n\u01b0\u1edbc c\u00f3 th\u1ec3 c\u00f3 \u01b0u th\u1ebf h\u01a1n v\u1ec1 d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 \u0111\u1ecba ph\u01b0\u01a1ng v\u00e0 th\u1ee7 t\u1ee5c \u0111\u0103ng k\u00fd theo quy \u0111\u1ecbnh c\u1ee7a t\u1eebng qu\u1ed1c gia. \u0110\u01b0\u1ee3c khuy\u00ean n\u00ean so s\u00e1nh \u0111\u00e1nh gi\u00e1 v\u1ec1 uy t\u00edn v\u00e0 \u0111i\u1ec1u<\/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

Th\u00f4ng tin chi ti\u1ebft \u0111\u1ec3 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n:<\/h3>\n\n\n\n

Trong qu\u00e1 tr\u00ecnh \u0111\u0103ng k\u00fd, b\u1ea1n c\u1ea7n \u0111i\u1ec1n \u0111\u1ea7y \u0111\u1ee7 v\u00e0 ch\u00ednh x\u00e1c th\u00f4ng tin c\u1ee7a ng\u01b0\u1eddi \u0111\u0103ng k\u00fd. Th\u00f4ng tin n\u00e0y bao g\u1ed3m t\u00ean c\u00e1 nh\u00e2n ho\u1eb7c t\u00ean c\u00f4ng ty, \u0111\u1ecba ch\u1ec9, \u0111\u1ecba ch\u1ec9 email v\u00e0 s\u1ed1 \u0111i\u1ec7n tho\u1ea1i. Nh\u1eefng th\u00f4ng tin n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong c\u01a1 s\u1edf d\u1eef li\u1ec7u WHOIS. Vui l\u00f2ng \u0111\u1ea3m b\u1ea3o r\u1eb1ng \u0111\u1ecba ch\u1ec9 email c\u1ee7a b\u1ea1n l\u00e0 ch\u00ednh x\u00e1c v\u00e0 h\u1ee3p l\u1ec7, v\u00ec \u0111\u00e2y l\u00e0 k\u00eanh ch\u00ednh \u0111\u1ec3 nh\u1eadn c\u00e1c th\u00f4ng b\u00e1o quan tr\u1ecdng nh\u01b0 email x\u00e1c th\u1ef1c ho\u1eb7c th\u00f4ng b\u00e1o gia h\u1ea1n.<\/p>\n\n\n\n

T\u00ednh c\u1ea7n thi\u1ebft c\u1ee7a vi\u1ec7c mua d\u1ecbch v\u1ee5 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 cho t\u00ean mi\u1ec1n (domain privacy protection)<\/h3>\n\n\n\n

Theo m\u1eb7c \u0111\u1ecbnh, th\u00f4ng tin \u0111\u0103ng k\u00fd c\u1ee7a b\u1ea1n l\u00e0 c\u00f4ng khai, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nguy c\u01a1 nh\u1eadn th\u01b0 r\u00e1c, cu\u1ed9c g\u1ecdi qu\u1ea5y r\u1ed1i ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 vi\u1ec7c b\u1ecb \u0111\u00e1nh c\u1eafp danh t\u00ednh. Do \u0111\u00f3, ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean mua d\u1ecbch v\u1ee5 \u201cB\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 WHOIS\u201d. D\u1ecbch v\u1ee5 n\u00e0y s\u1ebd thay th\u1ebf th\u00f4ng tin th\u1ef1c t\u1ebf c\u1ee7a b\u1ea1n b\u1eb1ng th\u00f4ng tin c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd trong c\u00e1c b\u1ea3n ghi WHOIS c\u00f4ng khai, t\u1eeb \u0111\u00f3 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 c\u00e1 nh\u00e2n c\u1ee7a b\u1ea1n, trong khi quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n v\u1eabn thu\u1ed9c v\u1ec1 b\u1ea1n.<\/p>\n\n\n\n

C\u00e1c thao t\u00e1c c\u1ed1t l\u00f5i 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 d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c cung c\u1ea5p m\u1ed9t c\u00e1ch \u1ed5n \u0111\u1ecbnh. Qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n tr\u1ef1c tuy\u1ebfn do nh\u00e0 \u0111\u0103ng k\u00fd cung c\u1ea5p.<\/p>\n\n\n\n

Ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n v\u00e0 c\u00e0i \u0111\u1eb7t DNS<\/h3>\n\n\n\n

H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNS) l\u00e0 d\u1ecbch v\u1ee5 chuy\u1ec3n \u0111\u1ed5i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP m\u00e0 m\u00e1y t\u00ednh c\u00f3 th\u1ec3 nh\u1eadn di\u1ec7n. B\u1ea1n c\u1ea7n \u0111\u0103ng nh\u1eadp v\u00e0o trang qu\u1ea3n tr\u1ecb c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n v\u00e0 t\u00ecm \u0111\u1ebfn ph\u1ea7n c\u00e0i \u0111\u1eb7t DNS. T\u1ea1i \u0111\u00e2y, b\u1ea1n c\u00f3 th\u1ec3 th\u00eam, s\u1eeda \u0111\u1ed5i ho\u1eb7c x\u00f3a c\u00e1c b\u1ea3n ghi DNS kh\u00e1c nhau. C\u00e1c lo\u1ea1i b\u1ea3n ghi ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m b\u1ea3n ghi A (tr\u1ecf t\u00ean mi\u1ec1n \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4), b\u1ea3n ghi CNAME (tr\u1ecf t\u00ean mi\u1ec1n \u0111\u1ebfn m\u1ed9t t\u00ean mi\u1ec1n kh\u00e1c), b\u1ea3n ghi MX (ch\u1ec9 \u0111\u1ecbnh m\u00e1y ch\u1ee7 mail), v.v.<\/p>\n\n\n\n

Chi\u1ebfn l\u01b0\u1ee3c gia h\u1ea1n v\u00e0 chuy\u1ec3n t\u00ean mi\u1ec1n<\/h3>\n\n\n\n

Vi\u1ec7c \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ednh ph\u00ed theo n\u0103m, v\u00ec v\u1eady b\u1ea1n c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn h\u1ea1n gia h\u1ea1n r\u1ea5t k\u1ef9. Ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean b\u1eadt ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00e0i kho\u1ea3n c\u1ee7a b\u1ea1n c\u00f3 \u0111\u1ee7 ti\u1ec1n \u0111\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng t\u00ean mi\u1ec1n b\u1ecb x\u00f3a do h\u1ebft h\u1ea1n v\u00e0 b\u1ecb ng\u01b0\u1eddi kh\u00e1c \u0111\u0103ng k\u00fd tr\u01b0\u1edbc. N\u1ebfu b\u1ea1n kh\u00f4ng h\u00e0i l\u00f2ng v\u1edbi d\u1ecbch v\u1ee5 c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd hi\u1ec7n t\u1ea1i, b\u1ea1n c\u00f3 th\u1ec3 chuy\u1ec3n t\u00ean mi\u1ec1n sang nh\u00e0 \u0111\u0103ng k\u00fd kh\u00e1c. Qu\u00e1 tr\u00ecnh chuy\u1ec3n t\u00ean mi\u1ec1n y\u00eau c\u1ea7u b\u1ea1n c\u00f3 m\u00e3 x\u00e1c th\u1ef1c (authorization code), \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00ean mi\u1ec1n \u0111ang \u1edf tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c m\u1edf kh\u00f3a v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd trong v\u00f2ng 60 ng\u00e0y tr\u1edf l\u00ean.<\/p>\n\n\n\n

Qu\u1ea3n l\u00fd c\u00e1c t\u00ean mi\u1ec1n con v\u00e0 ch\u1ee9c n\u0103ng chuy\u1ec3n h\u01b0\u1edbng (forwarding) cho t\u00ean mi\u1ec1n ch\u00ednh<\/h3>\n\n\n\n

T\u00ean mi\u1ec1n con \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch th\u00eam m\u1ed9t ti\u1ec1n t\u1ed1 tr\u01b0\u1edbc t\u00ean mi\u1ec1n ch\u00ednh, v\u00ed d\u1ee5 nh\u01b0 \u201cblog.example.com\u201d. B\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o c\u00e1c b\u1ea3n ghi gi\u1ea3i quy\u1ebft (resolution records) ri\u00eang bi\u1ec7t cho t\u00ean mi\u1ec1n con trong c\u00e0i \u0111\u1eb7t DNS, \u0111\u1ec3 ch\u00fang tr\u1ecf \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 ho\u1eb7c \u1ee9ng d\u1ee5ng kh\u00e1c nhau; \u0111i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n chia c\u00e1c m\u00f4-\u0111un ch\u1ee9c n\u0103ng kh\u00e1c nhau c\u1ee7a trang web. Ch\u1ee9c n\u0103ng chuy\u1ec3n h\u01b0\u1edbng t\u00ean mi\u1ec1n (domain forwarding) c\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng \u0111\u1ecbnh tuy\u1ebfn ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp v\u00e0o trang web c\u1ee7a b\u1ea1n \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 web kh\u00e1c \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh, v\u00e0 \u0111i\u1ec1u n\u00e0y r\u1ea5t h\u1eefu \u00edch trong c\u00e1c ho\u1ea1t \u0111\u1ed9ng n\u00e2ng c\u1ea5p th\u01b0\u01a1ng hi\u1ec7u ho\u1eb7c ti\u1ebfp th\u1ecb.<\/p>\n\n\n\n

C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u1ea5u h\u00ecnh n\u00e2ng cao c\u1ee7a d\u1ecbch v\u1ee5 gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (Domain Name Resolution \u2013 DNS)<\/h2>\n\n\n\n

Vi\u1ec7c gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (domain name resolution) l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t gi\u00fap ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 xem \u0111\u01b0\u1ee3c n\u1ed9i dung trang web sau khi h\u1ecd nh\u1eadp \u0111\u1ecba ch\u1ec9 web v\u00e0o tr\u00ecnh duy\u1ec7t. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a qu\u00e1 tr\u00ecnh n\u00e0y s\u1ebd h\u1ed7 tr\u1ee3 trong vi\u1ec7c kh\u1eafc ph\u1ee5c c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn vi\u1ec7c truy c\u1eadp trang web v\u00e0 t\u1ed1i<\/p>\n\n\n\n

Quy tr\u00ecnh ho\u00e0n ch\u1ec9nh c\u1ee7a vi\u1ec7c ph\u00e2n gi\u1ea3i DNS<\/h3>\n\n\n\n

Khi ng\u01b0\u1eddi d\u00f9ng nh\u1eadp t\u00ean mi\u1ec1n v\u00e0o tr\u00ecnh duy\u1ec7t, qu\u00e1 tr\u00ecnh gi\u1ea3i quy\u1ebft (resolution) b\u1eaft \u0111\u1ea7u di\u1ec5n ra. \u0110\u1ea7u ti\u00ean, m\u00e1y t\u00ednh s\u1ebd ki\u1ec3m tra b\u1ed9 nh\u1edb \u0111\u1ec7m DNS (DNS cache) tr\u00ean m\u00e1y. N\u1ebfu kh\u00f4ng t\u00ecm th\u1ea5y th\u00f4ng tin n\u00e0o, n\u00f3 s\u1ebd y\u00eau c\u1ea7u m\u00e1y ch\u1ee7 DNS \u0111\u1ec7 quy (recursive DNS server) do nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet cung c\u1ea5p. N\u1ebfu m\u00e1y ch\u1ee7 DNS \u0111\u1ec7 quy c\u0169ng kh\u00f4ng c\u00f3 th\u00f4ng tin trong b\u1ed9 nh\u1edb \u0111\u1ec7m, n\u00f3 s\u1ebd b\u1eaft \u0111\u1ea7u qu\u00e1 tr\u00ecnh t\u00ecm ki\u1ebfm t\u1eeb m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n g\u1ed1c (root domain server), sau \u0111\u00f3 l\u1ea7n l\u01b0\u1ee3t li\u00ean h\u1ec7 v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t (top-level domain servers) v\u00e0 c\u00e1c m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n c\u00f3 th\u1ea9m quy\u1ec1n (authoritative domain servers) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 IP t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u00ean mi\u1ec1n \u0111\u00f3, v\u00e0 cu\u1ed1i c\u00f9ng tr\u1ea3 k\u1ebft qu\u1ea3 v\u1ec1 tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/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

C\u1ea5u h\u00ecnh b\u1ea3n ghi A v\u00e0 b\u1ea3n ghi CNAME<\/h3>\n\n\n\n

Lo\u1ea1i b\u1ea3n ghi A (A Record) l\u00e0 lo\u1ea1i b\u1ea3n ghi c\u01a1 b\u1ea3n nh\u1ea5t, d\u00f9ng \u0111\u1ec3 chuy\u1ec3n h\u01b0\u1edbng m\u1ed9t t\u00ean mi\u1ec1n ho\u1eb7c t\u00ean mi\u1ec1n con tr\u1ef1c ti\u1ebfp \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4. V\u00ed d\u1ee5: chuy\u1ec3n h\u01b0\u1edbng \u201cwww.example.com\u201d \u0111\u1ebfn IP c\u1ee7a m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n. Lo\u1ea1i b\u1ea3n ghi CNAME (Canonical Name Record), c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1ea3n ghi t\u00ean mi\u1ec1n \u0111\u1ea1i di\u1ec7n, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 li\u00ean k\u1ebft m\u1ed9t t\u00ean mi\u1ec1n v\u1edbi m\u1ed9t t\u00ean mi\u1ec1n kh\u00e1c, gi\u00fap c\u1ea3 hai chia s\u1ebb c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 IP. V\u00ed d\u1ee5: thi\u1ebft l\u1eadp \u201cmail.example.com\u201d l\u00e0m b\u1ea3n ghi CNAME c\u1ee7a \u201cexample.com\u201d; nh\u1edd \u0111\u00f3, khi \u0111\u1ecba ch\u1ec9 IP c\u1ee7a t\u00ean mi\u1ec1n ch\u00ednh thay \u0111\u1ed5i, b\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i ch\u1ec9nh s\u1eeda \u0111\u1ecba ch\u1ec9 IP cho t\u00ean mi\u1ec1n con \u201cmail.example.com\u201d m\u1ed9t c\u00e1ch ri\u00eang bi\u1ec7t.<\/p>\n\n\n\n

S\u1eed d\u1ee5ng c\u00e1c b\u1ea3n ghi MX (Mail Exchange) v\u00e0 TXT (Text)<\/h3>\n\n\n\n

MX (Mail Exchange) record ch\u1ecbu tr\u00e1ch nhi\u1ec7m \u0111\u1ecbnh tuy\u1ebfn email, b\u1eb1ng c\u00e1ch ch\u1ec9 \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 nh\u1eadn email cho m\u1ed9t t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3. C\u00e1c MX record c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo th\u1ee9 t\u1ef1 \u01b0u ti\u00ean; s\u1ed1 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 th\u00eam th\u00f4ng tin v\u0103n b\u1ea3n v\u00e0o t\u00ean mi\u1ec1n, v\u1edbi nh\u1eefng m\u1ee5c \u0111\u00edch ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 x\u00e1c th\u1ef1c quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n (ch\u1eb3ng h\u1ea1n, cho c\u00e1c c\u00f4ng c\u1ee5 qu\u1ea3n tr\u1ecb trang web c\u1ee7a Google ho\u1eb7c c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm) v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt email (nh\u01b0 SPF, DKIM record) nh\u1eb1m ng\u0103n ch\u1eb7n th\u01b0 r\u00e1c.<\/p>\n\n\n\n

C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ec3 n\u00e2ng cao \u0111\u1ed9 b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a t\u00ean mi\u1ec1n<\/h2>\n\n\n\n

Sau khi t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng, b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u n\u0103ng l\u00e0 hai kh\u00eda c\u1ea1nh c\u1ea7n \u0111\u01b0\u1ee3c theo d\u00f5i li\u00ean t\u1ee5c. Vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p th\u00edch h\u1ee3p c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 r\u1ee7i ro v\u00e0 n\u00e2ng cao tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n

K\u00edch ho\u1ea1t DNSSEC \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng t\u00ednh b\u1ea3o m\u1eadt.<\/h3>\n\n\n\n

Khi \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ban \u0111\u1ea7u, giao th\u1ee9c DNS kh\u00f4ng c\u00f3 c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c d\u1eef li\u1ec7u, do \u0111\u00f3 d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng nh\u01b0 t\u1ea5n c\u00f4ng l\u00e0m nhi\u1ec5m \u0111\u1ed9c b\u1ed9 nh\u1edb \u0111\u1ec7m DNS (DNS cache poisoning). DNSSEC gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch th\u00eam c\u00e1c ch\u1eef k\u00fd s\u1ed1 v\u00e0o d\u1eef li\u1ec7u DNS, \u0111\u1ea3m b\u1ea3o r\u1eb1ng k\u1ebft qu\u1ea3 truy v\u1ea5n kh\u00f4ng b\u1ecb s\u1eeda \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i. Ng\u00e0y c\u00e0ng nhi\u1ec1u nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n v\u00e0 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS b\u1eaft \u0111\u1ea7u h\u1ed7 tr\u1ee3 DNSSEC; vi\u1ec7c k\u00edch ho\u1ea1t DNSSEC c\u00f3 th\u1ec3 mang l\u1ea1i m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt quan tr\u1ecdng cho t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

S\u1eed d\u1ee5ng CDN (Content Delivery Network) v\u00e0 DNS th\u00f4ng minh \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 truy c\u1eadp.<\/h3>\n\n\n\n

M\u1ea1ng l\u01b0\u1edbi ph\u00e2n ph\u1ed1i n\u1ed9i dung (Content Distribution Network \u2013 CDN) gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tr\u1ec5 v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3i trang b\u1eb1ng c\u00e1ch l\u01b0u tr\u1eef n\u1ed9i dung trang web c\u1ee7a b\u1ea1n t\u1ea1i c\u00e1c n\u00fat \u0111\u1ea7u cu\u1ed1i (edge nodes) tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi. Nh\u1edd \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 truy c\u1eadp d\u1eef li\u1ec7u t\u1eeb n\u00fat g\u1ea7n nh\u1ea5t v\u1ec1 m\u1eb7t \u0111\u1ecba l\u00fd, gi\u00fap tr\u1ea3i nghi\u1ec7m tr\u1ef1c tuy\u1ebfn t\u1ed1t h\u01a1n. Ngo\u00e0i ra, m\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5 DNS th\u00f4ng minh c\u00f3 th\u1ec3 \u0111\u1ecbnh tuy\u1ebfn truy c\u1eadp \u0111\u1ebfn c\u00e1c IP m\u00e1y ch\u1ee7 kh\u00e1c nhau t\u00f9y theo ngu\u1ed3n g\u1ed1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, t\u1eeb \u0111\u00f3 th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c ph\u00e2n b\u1ed5 t\u1ea3i (load balancing) v\u00e0 chuy\u1ec3n ti\u1ebfp ho\u1ea1t \u0111\u1ed9ng (failover), nh\u1eb1m n\u00e2ng cao \u0111\u1ed9 s\u1eb5n s\u00e0ng v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a trang web.<\/p>\n\n\n\n

Th\u1ef1c hi\u1ec7n ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 t\u00ecnh tr\u1ea1ng s\u1ee9c kh\u1ecfe c\u1ee7a t\u00ean mi\u1ec1n (domain health check).<\/h3>\n\n\n\n

B\u1ea1n n\u00ean h\u00ecnh th\u00e0nh th\u00f3i quen ki\u1ec3m tra t\u00ecnh tr\u1ea1ng t\u00ean mi\u1ec1n \u0111\u1ecbnh k\u1ef3. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m: x\u00e1c nh\u1eadn r\u1eb1ng th\u00f4ng tin trong b\u1ea3ng WHOIS l\u00e0 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh n\u0103ng b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t; ki\u1ec3m tra xem t\u1ea5t c\u1ea3 c\u00e1c b\u1ea3n ghi DNS c\u00f3 \u0111\u00fang kh\u00f4ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 sau khi b\u1ea1n thay \u0111\u1ed5i nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 m\u00e1y ch\u1ee7; x\u00e1c minh xem ch\u1ee9ng ch\u1ec9 SSL c\u00f3 c\u00f2n hi\u1ec7u l\u1ef1c v\u00e0 ch\u01b0a h\u1ebft h\u1ea1n hay kh\u00f4ng; theo d\u00f5i t\u1ed1c \u0111\u1ed9 gi\u1ea3i quy\u1ebft y\u00eau c\u1ea7u v\u00e0 t\u00ednh kh\u1ea3 d\u1ee5ng c\u1ee7a t\u00ean mi\u1ec1n. Nhi\u1ec1u c\u00f4ng c\u1ee5 tr\u1ef1c tuy\u1ebfn c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00e1c qu\u00e1 tr\u00ecnh ki\u1ec3m tra n\u00e0y.<\/p>\n\n

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\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\u0110\u0103ng\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\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

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

T\u00ean mi\u1ec1n l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n cho c\u00e1c t\u00e0i s\u1ea3n k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a b\u1ea1n; vi\u1ec7c \u0111\u0103ng k\u00fd, qu\u1ea3n l\u00fd v\u00e0 gi\u1ea3i quy\u1ebft (\u89e3\u6790) ch\u00fang l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p v\u00e0 li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd v\u1edbi nhau. T\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00e0 \u0111\u0103ng k\u00fd m\u1ed9t t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p, \u0111\u1ebfn vi\u1ec7c c\u1ea5u h\u00ecnh gi\u1ea3i quy\u1ebft ch\u00ednh x\u00e1c th\u00f4ng qua c\u00e1c panel qu\u1ea3n l\u00fd DNS chuy\u00ean nghi\u1ec7p, v\u00e0 sau \u0111\u00f3 l\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t, m\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u r\u1ea5t quan tr\u1ecdng. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n v\u00e0 h\u00ecnh th\u00e0nh th\u00f3i quen qu\u1ea3n l\u00fd t\u1ed1t kh\u00f4ng ch\u1ec9 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 t\u1ed1c \u0111\u1ed9 truy c\u1eadp cao cho trang web c\u1ee7a b\u1ea1n, m\u00e0 c\u00f2n gi\u00fap b\u1ea3o v\u1ec7 th\u01b0\u01a1ng hi\u1ec7u c\u0169ng nh\u01b0 danh t\u00ednh tr\u1ef1c tuy\u1ebfn c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. H\u00e3y coi t\u00ean mi\u1ec1n nh\u01b0 m\u1ed9t t\u00e0i s\u1ea3n chi\u1ebfn l\u01b0\u1ee3c l\u00e2u d\u00e0i; n\u00f3 s\u1ebd li\u00ean t\u1ee5c t\u1ea1o ra gi\u00e1 tr\u1ecb cho doanh nghi\u1ec7p tr\u1ef1c tuy\u1ebfn c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

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

T\u00ean mi\u1ec1n c\u00f3 hi\u1ec7u l\u1ef1c sau bao l\u00e2u k\u1ec3 t\u1eeb khi \u0111\u0103ng k\u00fd?<\/h3>\n\n\n\n

Vi\u1ec7c \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n th\u01b0\u1eddng s\u1ebd c\u00f3 hi\u1ec7u l\u1ef1c trong v\u00f2ng v\u00e0i ph\u00fat \u0111\u1ebfn v\u00e0i gi\u1edd sau khi thanh to\u00e1n \u0111\u01b0\u1ee3c ho\u00e0n t\u1ea5t, nh\u01b0ng \u0111\u1ec3 h\u1ec7 th\u1ed1ng DNS to\u00e0n c\u1ea7u \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt ho\u00e0n to\u00e0n th\u00ec c\u00f3 th\u1ec3 m\u1ea5t t\u1eeb 24 \u0111\u1ebfn 48 gi\u1edd. Trong th\u1eddi gian n\u00e0y, ng\u01b0\u1eddi d\u00f9ng \u1edf m\u1ed9t s\u1ed1 khu v\u1ef1c c\u00f3 th\u1ec3 s\u1ebd g\u1eb7p ph\u1ea3i s\u1ef1 c\u1ed1 trong vi\u1ec7c truy c\u1eadp v\u00e0o t\u00ean mi\u1ec1n v\u1eeba \u0111\u0103ng k\u00fd.<\/p>\n\n\n\n

T\u00f4i c\u00f3 th\u1ec3 mua m\u1ed9t t\u00ean mi\u1ec1n m\u1ed9t c\u00e1ch v\u0129nh vi\u1ec5n kh\u00f4ng?<\/h3>\n\n\n\n

Kh\u00f4ng \u0111\u01b0\u1ee3c. Vi\u1ec7c \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo h\u00ecnh th\u1ee9c thu\u00ea h\u00e0ng n\u0103m, v\u1edbi th\u1eddi h\u1ea1n \u0111\u0103ng k\u00fd t\u1ed1i \u0111a l\u00e0 10 n\u0103m m\u1ed7i l\u1ea7n. B\u1ea1n c\u1ea7n ph\u1ea3i gia h\u1ea1n \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 duy tr\u00ec quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n \u0111\u00f3. B\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u t\u1ed1i \u0111a nguy c\u01a1 m\u1ea5t t\u00ean mi\u1ec1n do qu\u00ean kh\u00f4ng gia h\u1ea1n.<\/p>\n\n\n\n

T\u00ean mi\u1ec1n (domain name) v\u00e0 m\u00e1y ch\u1ee7 \u1ea3o (virtual host) c\u00f3 ph\u1ea3i l\u00e0 c\u00f9ng m\u1ed9t th\u1ee9 kh\u00f4ng?<\/h3>\n\n\n\n

Kh\u00f4ng ph\u1ea3i v\u1eady. T\u00ean mi\u1ec1n (domain name) l\u00e0 \u0111\u1ecba ch\u1ec9 c\u1ee7a trang web c\u1ee7a b\u1ea1n, trong khi m\u00e1y ch\u1ee7 \u1ea3o (virtual host) l\u00e0 kh\u00f4ng gian l\u01b0u tr\u1eef c\u00e1c t\u1ec7p tin c\u1ee7a trang web (nh\u01b0 HTML, h\u00ecnh \u1ea3nh) tr\u00ean m\u00e1y ch\u1ee7. B\u1ea1n c\u1ea7n thi\u1ebft l\u1eadp ph\u00e9p gi\u1ea3i quy\u1ebft (DNS resolution) \u0111\u1ec3 \u0111\u1ecbnh t\u00ean mi\u1ec1n \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP m\u00e0 m\u00e1y ch\u1ee7 \u1ea3o cung c\u1ea5p; ch\u1ec9 khi \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng m\u1edbi c\u00f3 th\u1ec3 truy c\u1eadp n\u1ed9i dung trang web c\u1ee7a b\u1ea1n th\u00f4ng qua t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n\n\n\n

T\u1ea1i sao sau khi thay \u0111\u1ed5i th\u00f4ng tin DNS, t\u00f4i v\u1eabn truy c\u1eadp \u0111\u01b0\u1ee3c trang web c\u0169?<\/h3>\n\n\n\n

Sau khi thay \u0111\u1ed5i th\u00f4ng tin DNS, th\u00f4ng tin gi\u1ea3i quy\u1ebft (resolution) m\u1edbi c\u1ea7n th\u1eddi gian \u0111\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i v\u00e0 c\u1eadp nh\u1eadt tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 DNS tr\u00ean to\u00e0n b\u1ed9 m\u1ea1ng Internet th\u1ebf gi\u1edbi; qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cDNS propagation\u201d. Do s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a b\u1ed9 \u0111\u1ec7m DNS t\u1ea1i c\u00e1c \u0111\u1ecba ph\u01b0\u01a1ng, th\u1eddi gian truy\u1ec1n th\u00f4ng tin c\u00f3 th\u1ec3 k\u00e9o d\u00e0i t\u1eeb v\u00e0i ph\u00fat \u0111\u1ebfn 48 gi\u1edd. Vi\u1ec7c x\u00f3a b\u1ed9 \u0111\u1ec7m DNS c\u1ee5c b\u1ed9 c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n nh\u00ecn th\u1ea5y ngay l\u1eadp t\u1ee9c nh\u1eefng thay \u0111\u1ed5i \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/p>","protected":false},"excerpt":{"rendered":"

\u0110\u00e2y l\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 c\u00e1c thao t\u00e1c li\u00ean quan \u0111\u1ebfn t\u00ean mi\u1ec1n (domain names). N\u1ed9i dung bao g\u1ed3m c\u1ea5u tr\u00fac c\u1ee7a t\u00ean mi\u1ec1n, c\u00e1ch l\u1ef1a ch\u1ecdn nh\u00e0 \u0111\u0103ng k\u00fd (registrar), c\u00e1ch b\u1ea3o v\u1ec7 th\u00f4ng tin c\u00e1 nh\u00e2n trong b\u1ea3ng th\u00f4ng tin WHOIS (WHOIS privacy), \u0111\u1ed3ng th\u1eddi gi\u1ea3i th\u00edch chi ti\u1ebft nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a qu\u00e1 tr\u00ecnh gi\u1ea3i m\u00e3 \u0111\u1ecba ch\u1ec9 IP (DNS resolution), c\u00e1ch thi\u1ebft l\u1eadp c\u00e1c lo\u1ea1i b\u1ea3n ghi nh\u01b0 A, CNAME, MX, c\u0169ng nh\u01b0 c\u00e1c b\u01b0\u1edbc c\u1ed1t l\u00f5i trong vi\u1ec7c gia h\u1ea1n, chuy\u1ec3n nh\u01b0\u1ee3ng v\u00e0 qu\u1ea3n l\u00fd b\u1ea3o m\u1eadt t\u00ean mi\u1ec1n. M\u1ee5c \u0111\u00edch c\u1ee7a h\u01b0\u1edbng d\u1eabn n\u00e0y l\u00e0 gi\u00fap ng\u01b0\u1eddi d\u00f9ng n\u1eafm v\u1eefng to\u00e0n b\u1ed9 quy tr\u00ecnh t\u1eeb vi\u1ec7c<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"knowledge_category":[279],"class_list":["post-12377473","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\u89e3\u6790\uff0c\u57df\u540d\u89e3\u6790\u6307\u5357\uff0cWHOIS\u67e5\u8be2\uff0c\u57df\u540d\u5b89\u5168\u6700\u4f73\u5b9e\u8df5\uff0c\u57df\u540d\u89e3\u6790\u6d41\u7a0b\uff0c\u57df\u540d\u9690\u79c1\u4fdd\u62a4"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12377473","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\/12377473\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12377473"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12377473"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12377473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}