{"id":12375333,"date":"2026-03-18T04:05:50","date_gmt":"2026-03-17T20:05:50","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e5%9f%9f%e5%90%8d%e6%b3%a8%e5%86%8c%e3%80%81%e7%ae%a1%e7%90%86%e4%b8%8e-dns-%e8%a7%a3%e6%9e%90%e9%85%8d%e7%bd%ae%e7%9a%84%e5%ae%8c%e6%95%b4%e6%8a%80%e6%9c%af%e6%8c%87%e5%8d%97\/"},"modified":"2026-03-18T04:15:26","modified_gmt":"2026-03-17T20:15:26","slug":"domain-registration-management-dns-configuration-guide","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/domain\/domain-registration-management-dns-configuration-guide\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt to\u00e0n di\u1ec7n v\u1ec1 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, qu\u1ea3n l\u00fd v\u00e0 c\u1ea5u h\u00ecnh gi\u1ea3i quy\u1ebft DNS"},"content":{"rendered":"

Trong th\u1ebf gi\u1edbi internet, t\u00ean mi\u1ec1n ch\u00ednh l\u00e0 \u201cs\u1ed1 nh\u00e0\u201d v\u00e0 \u201cd\u1ea5u hi\u1ec7u nh\u1eadn di\u1ec7n\u201d c\u1ee7a c\u00e1c t\u00e0i s\u1ea3n k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a b\u1ea1n. N\u00f3 kh\u00f4ng ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch ng\u01b0\u1eddi d\u00f9ng t\u00ecm th\u1ea5y b\u1ea1n m\u00e0 c\u00f2n quan tr\u1ecdng h\u01a1n n\u1eefa \u0111\u1ed1i v\u1edbi kh\u1ea3 n\u0103ng truy c\u1eadp, t\u00ednh b\u1ea3o m\u1eadt v\u00e0 h\u00ecnh \u1ea3nh th\u01b0\u01a1ng hi\u1ec7u c\u1ee7a trang web. M\u1ed9t v\u00f2ng \u0111\u1eddi ho\u00e0n ch\u1ec9nh c\u1ee7a m\u1ed9t t\u00ean mi\u1ec1n bao g\u1ed3m t\u1eeb kh\u00e2u s\u00e1ng t\u1ea1o \u00fd t\u01b0\u1edfng ban \u0111\u1ea7u, \u0111\u0103ng k\u00fd mua, cho \u0111\u1ebfn vi\u1ec7c qu\u1ea3n l\u00fd h\u00e0ng ng\u00e0y v\u00e0 c\u1ea5u h\u00ecnh k\u1ef9 thu\u1eadt sau n\u00e0y. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd ph\u00e2n t\u00edch to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng, gi\u00fap b\u1ea1n n\u1eafm v\u1eefng nh\u1eefng ki\u1ebfn th\u1ee9c c\u1ed1t l\u00f5i v\u1ec1 t\u00ean mi\u1ec1n t\u1eeb g\u00f3c \u0111\u1ed9 k\u1ef9 thu\u1eadt.<\/p>\n\n\n\n

Ph\u00e2n t\u00edch to\u00e0n b\u1ed9 quy tr\u00ecnh \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n<\/h2>\n\n\n\n

\u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t \u0111\u1ecba ch\u1ec9 tr\u00ean m\u1ea1ng internet \u0111\u1ed9c \u0111\u00e1o. Qu\u00e1 tr\u00ecnh n\u00e0y kh\u00f4ng \u0111\u01a1n gi\u1ea3n ch\u1ec9 l\u00e0 mua m\u1ed9t t\u00ean mi\u1ec1n, m\u00e0 l\u00e0 thu\u00ea quy\u1ec1n s\u1eed d\u1ee5ng m\u1ed9t t\u00ean c\u00f3 ph\u1ea7n m\u1edf r\u1ed9ng c\u1ee5 th\u1ec3 (nh\u01b0 .com, .cn, .net, v.v.) t\u1eeb nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n b\u1edfi ICANN. Th\u1eddi h\u1ea1n thu\u00ea th\u01b0\u1eddng dao \u0111\u1ed9ng t\u1eeb 1 \u0111\u1ebfn 10 n\u0103m.<\/p>\n\n\n\n

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

Nh\u00e0 \u0111\u0103ng k\u00fd l\u00e0 c\u00f4ng c\u1ee5 tr\u1ef1c ti\u1ebfp gi\u00fap b\u1ea1n qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh. Khi l\u1ef1a ch\u1ecdn nh\u00e0 \u0111\u0103ng k\u00fd, b\u1ea1n c\u1ea7n xem x\u00e9t \u0111\u1ebfn nhi\u1ec1u y\u1ebfu t\u1ed1 nh\u01b0 uy t\u00edn c\u1ee7a h\u1ecd, m\u1ee9c \u0111\u1ed9 minh b\u1ea1ch v\u1ec1 gi\u00e1 c\u1ea3, s\u1ef1 d\u1ec5 d\u00e0ng khi s\u1eed d\u1ee5ng giao di\u1ec7n qu\u1ea3n tr\u1ecb, ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng, v\u00e0 li\u1ec7u h\u1ecd c\u00f3 cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 b\u1ea3o m\u1eadt b\u1ed5 sung (nh\u01b0 b\u1ea3o v\u1ec7 th\u00f4ng tin Whois) hay kh\u00f4ng. C\u00e1c nh\u00e0 \u0111\u0103ng k\u00fd qu\u1ed1c t\u1ebf c\u00f3 uy t\u00edn v\u00e0 nh\u1eefng nh\u00e0 \u0111\u0103ng k\u00fd trong n\u01b0\u1edbc \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn b\u1edfi B\u1ed9 C\u00f4ng nghi\u1ec7p v\u00e0 Th\u00f4ng tin Trung Qu\u1ed1c \u0111\u1ec1u l\u00e0 nh\u1eefng l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn. Nh\u00e0 \u0111\u0103ng k\u00fd qu\u1ed1c t\u1ebf th\u01b0\u1eddng c\u00f3 \u01b0u th\u1ebf v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng lo\u1ea1i t\u00ean mi\u1ec1n v\u00e0 m\u1ee9c gi\u00e1 c\u1ea3, trong khi nh\u00e0 \u0111\u0103ng k\u00fd trong n\u01b0\u1edbc l\u1ea1i cung c\u1ea5p s\u1ef1 h\u1ed7 tr\u1ee3 t\u1ed1t h\u01a1n trong qu\u00e1 tr\u00ecnh \u0111\u0103ng k\u00fd c\u00e1c<\/p>\n\n\n\n

Truy v\u1ea5n v\u00e0 x\u00e1c \u0111\u1ecbnh t\u00ean mi\u1ec1n kh\u1ea3 d\u1ee5ng<\/h3>\n\n\n\n

H\u00e3y s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm do nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n cung c\u1ea5p \u0111\u1ec3 ki\u1ec3m tra xem t\u00ean mi\u1ec1n b\u1ea1n mong mu\u1ed1n c\u00f3 s\u1eb5n hay kh\u00f4ng. M\u1ed9t t\u00ean mi\u1ec1n l\u00fd t\u01b0\u1edfng n\u00ean ng\u1eafn g\u1ecdn, d\u1ec5 nh\u1edb, li\u00ean quan m\u1eadt thi\u1ebft \u0111\u1ebfn th\u01b0\u01a1ng hi\u1ec7u ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng kinh doanh c\u1ee7a b\u1ea1n, v\u00e0 d\u1ec5 \u0111\u00e1nh v\u1ea7n c\u0169ng nh\u01b0 d\u1ec5 \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ee5ng b\u1eb1ng l\u1eddi n\u00f3i. \u0110\u1ed3ng th\u1eddi, h\u00e3y ch\u00fa \u00fd tr\u00e1nh vi\u1ec7c vi ph\u1ea1m quy\u1ec1n s\u1edf h\u1eefu th\u01b0\u01a1ng hi\u1ec7u c\u1ee7a ng\u01b0\u1eddi kh\u00e1c. N\u1ebfu t\u00ean mi\u1ec1n b\u1ea1n ch\u1ecdn \u0111\u00e3 b\u1ecb \u0111\u0103ng k\u00fd, b\u1ea1n c\u00f3 th\u1ec3 th\u1eed thay \u0111\u1ed5i ph\u1ea7n ph\u1ee5 (s\u1eed d\u1ee5ng c\u00e1c t\u00ean mi\u1ec1n m\u1edbi nh\u01b0 .io, .co), th\u00eam c\u00e1c t\u1eeb kh\u00f3a li\u00ean quan \u0111\u1ebfn ng\u00e0nh, ho\u1eb7c th\u1eed c\u00e1ch vi\u1ebft kh\u00e1c cho t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n\n\n\n

Ho\u00e0n t\u1ea5t \u0111\u0103ng k\u00fd v\u00e0 x\u00e1c th\u1ef1c th\u00f4ng tin th\u1ef1c<\/h3>\n\n\n\n

Sau khi x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c t\u00ean mi\u1ec1n mong mu\u1ed1n, h\u00e3y th\u00eam n\u00f3 v\u00e0o gi\u1ecf h\u00e0ng v\u00e0 ch\u1ecdn th\u1eddi h\u1ea1n \u0111\u0103ng k\u00fd. Theo quy \u0111\u1ecbnh c\u1ee7a ICANN v\u00e0 ch\u00ednh ph\u1ee7 Trung Qu\u1ed1c, h\u1ea7u h\u1ebft c\u00e1c t\u00ean mi\u1ec1n \u0111\u1ec1u ph\u1ea3i tr\u1ea3i qua qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c danh t\u00ednh. \u0110\u1ed1i v\u1edbi c\u00e1c t\u00ean mi\u1ec1n c\u00f3 m\u00e3 qu\u1ed1c gia nh\u01b0 .cn ho\u1eb7c c\u00e1c t\u00ean mi\u1ec1n .com \u0111\u0103ng k\u00fd t\u1ea1i c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 trong n\u01b0\u1edbc, b\u1ea1n c\u1ea7n n\u1ed9p th\u00f4ng tin c\u00e1 nh\u00e2n ho\u1eb7c doanh nghi\u1ec7p \u0111\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m tra. Ch\u1ec9 sau khi qua \u0111\u01b0\u1ee3c qu\u00e1 tr\u00ecnh ki\u1ec3m tra, t\u00ean mi\u1ec1n m\u1edbi \u0111\u01b0\u1ee3c coi l\u00e0 h\u1ee3p l\u1ec7 v\u00e0 c\u00f3 hi\u1ec7u l\u1ef1c. H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng th\u00f4ng tin \u0111\u0103ng k\u00fd (\u0111\u1eb7c bi\u1ec7t l\u00e0 email c\u1ee7a ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb) ch\u00ednh x\u00e1c v\u00e0 h\u1ee3p l\u1ec7, v\u00ec \u0111\u00e2y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 nh\u1eadn th\u00f4ng b\u00e1o gia h\u1ea1n v\u00e0 x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n.<\/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

Nhi\u1ec7m v\u1ee5 c\u1ed1t l\u00f5i c\u1ee7a 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 v\u00e0 b\u1ea3o tr\u00ec l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n duy tr\u00ec quy\u1ec1n ki\u1ec3m so\u00e1t li\u00ean t\u1ee5c \u0111\u1ed1i v\u1edbi t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh, \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o t\u00ednh an to\u00e0n v\u00e0 \u1ed5n \u0111\u1ecbnh cho n\u00f3.<\/p>\n\n\n\n

Qu\u1ea3n l\u00fd th\u00f4ng tin t\u00ean mi\u1ec1n (Whois)<\/h3>\n\n\n\n

Th\u00f4ng tin trong b\u1ea3ng ghi Whois l\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f4ng khai ch\u1ee9a c\u00e1c d\u1eef li\u1ec7u \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, bao g\u1ed3m t\u00ean ch\u1ee7 s\u1edf h\u1eefu, \u0111\u1ecba ch\u1ec9 email, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i v\u00e0 \u0111\u1ecba ch\u1ec9 nh\u00e0. B\u1ea1n n\u00ean \u0111\u0103ng nh\u1eadp v\u00e0o b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 ki\u1ec3m tra v\u00e0 c\u1eadp nh\u1eadt c\u00e1c th\u00f4ng tin n\u00e0y, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ecba ch\u1ec9 email. Vi\u1ec7c b\u1eadt d\u1ecbch v\u1ee5 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 cho th\u00f4ng tin Whois (m\u1ed9t s\u1ed1 nh\u00e0 \u0111\u0103ng k\u00fd cung c\u1ea5p mi\u1ec5n ph\u00ed) c\u00f3 th\u1ec3 gi\u00fap \u1ea9n th\u00f4ng tin c\u00e1 nh\u00e2n c\u1ee7a b\u1ea1n, tr\u00e1nh vi\u1ec7c b\u1ecb r\u00f2 r\u1ec9 v\u00e0 g\u00e2y ra c\u00e1c email h\u00e0ng lo\u1ea1t (spam) ho\u1eb7c s\u1ef1 qu\u1ea5y r\u1ed1i.<\/p>\n\n\n\n

Ch\u00ednh s\u00e1ch gia h\u1ea1n v\u00e0 h\u1ebft h\u1ea1n t\u00ean mi\u1ec1n<\/h3>\n\n\n\n

T\u00ean mi\u1ec1n c\u00f3 th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c gia h\u1ea1n k\u1ecbp th\u1eddi tr\u01b0\u1edbc khi h\u1ebft h\u1ea1n. 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\u00f3 \u0111\u1ee7 ti\u1ec1n \u0111\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c gia h\u1ea1n; \u0111\u00e2y l\u00e0 bi\u1ec7n ph\u00e1p hi\u1ec7u qu\u1ea3 \u0111\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng t\u00ean mi\u1ec1n h\u1ebft h\u1ea1n m\u1ed9t c\u00e1ch kh\u00f4ng mong mu\u1ed1n. N\u1ebfu t\u00ean mi\u1ec1n h\u1ebft h\u1ea1n, th\u01b0\u1eddng s\u1ebd c\u00f3 m\u1ed9t kho\u1ea3ng th\u1eddi gian gia h\u1ea1n k\u00e9o d\u00e0i kho\u1ea3ng 30 ng\u00e0y, trong \u0111\u00f3 ch\u1ee7 s\u1edf h\u1eefu ban \u0111\u1ea7u v\u1eabn c\u00f3 th\u1ec3 gia h\u1ea1n v\u1edbi m\u1ee9c gi\u00e1 ban \u0111\u1ea7u. Sau khi kho\u1ea3ng th\u1eddi gian gia h\u1ea1n k\u1ebft th\u00fac, t\u00ean mi\u1ec1n s\u1ebd b\u01b0\u1edbc v\u00e0o giai \u0111o\u1ea1n c\u00f3 gi\u00e1 thu h\u1ed3i cao h\u01a1n; chi ph\u00ed gia h\u1ea1n s\u1ebd t\u0103ng \u0111\u00e1ng k\u1ec3. N\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c thu h\u1ed3i, t\u00ean mi\u1ec1n s\u1ebd b\u1ecb x\u00f3a v\u00e0 m\u1edf l\u1ea1i cho vi\u1ec7c \u0111\u0103ng k\u00fd m\u1edbi.<\/p>\n\n\n\n

Chuy\u1ec3n t\u00ean mi\u1ec1n v\u00e0 b\u1ea3o m\u1eadt t\u00e0i kho\u1ea3n<\/h3>\n\n\n\n

Vi\u1ec7c chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n l\u00e0 qu\u00e1 tr\u00ecnh di chuy\u1ec3n t\u00ean mi\u1ec1n t\u1eeb m\u1ed9t nh\u00e0 \u0111\u0103ng k\u00fd sang nh\u00e0 \u0111\u0103ng k\u00fd kh\u00e1c. Tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n chuy\u1ec3n nh\u01b0\u1ee3ng, b\u1ea1n c\u1ea7n \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00ean mi\u1ec1n \u0111\u00e3 \u0111\u01b0\u1ee3c \u201ckh\u00f3a\u201d (unlocked), c\u00f3 m\u00e3 x\u00e1c th\u1ef1c (EPP Code), v\u00e0 \u0111\u1ecba ch\u1ec9 email li\u00ean k\u1ebft v\u1edbi t\u00ean mi\u1ec1n c\u00f3 th\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c th\u00f4ng b\u00e1o x\u00e1c nh\u1eadn vi\u1ec7c chuy\u1ec3n nh\u01b0\u1ee3ng. Vi\u1ec7c t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt t\u00e0i kho\u1ea3n c\u0169ng r\u1ea5t quan tr\u1ecdng: h\u00e3y \u0111\u1eb7t m\u1eadt kh\u1ea9u m\u1ea1nh cho t\u00e0i kho\u1ea3n nh\u00e0 \u0111\u0103ng k\u00fd, b\u1eadt x\u00e1c th\u1ef1c hai y\u1ebfu t\u1ed1 (2FA), v\u00e0 c\u1ea3nh gi\u00e1c v\u1edbi c\u00e1c email l\u1eeba \u0111\u1ea3o nh\u1eb1m m\u1ee5c \u0111\u00edch sao ch\u00e9p t\u00ean mi\u1ec1n. Nh\u1eefng bi\u1ec7n ph\u00e1p n\u00e0y s\u1ebd gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 nguy c\u01a1 t\u00ean mi\u1ec1n b\u1ecb \u0111\u00e1nh c\u1eafp.<\/p>\n\n\n\n

H\u01b0\u1edbng d\u1eabn s\u00e2u v\u1ec1 c\u1ea5u h\u00ecnh ph\u00e2n gi\u1ea3i DNS<\/h2>\n\n\n\n

H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNS \u2013 Domain Name System) l\u00e0 m\u1ed9t d\u1ecbch v\u1ee5 danh m\u1ee5c ph\u00e2n t\u00e1n c\u00f3 ch\u1ee9c n\u0103ng chuy\u1ec3n \u0111\u1ed5i c\u00e1c t\u00ean mi\u1ec1n d\u1ec5 \u0111\u1ecdc cho con ng\u01b0\u1eddi (nh\u01b0 www.example.com) th\u00e0nh \u0111\u1ecba ch\u1ec9 IP d\u1ec5 \u0111\u1ecdc cho m\u00e1y t\u00ednh (nh\u01b0 192.0.2.1). Vi\u1ec7c hi\u1ec3u r\u00f5 v\u00e0 c\u1ea5u h\u00ecnh DNS m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 c\u00e1c t\u00ean mi\u1ec1n c\u00f3 th\u1ec3 tr\u1ecf \u0111\u1ebfn \u0111\u00fang trang web ho\u1eb7c d\u1ecbch v\u1ee5 t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n

Gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 c\u00e1c lo\u1ea1i b\u1ea3n ghi DNS<\/h3>\n\n\n\n

DNS (Domain Name System) s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i b\u1ea3n ghi (records) kh\u00e1c nhau \u0111\u1ec3 th\u1ef1c hi\u1ec7n nhi\u1ec1u ch\u1ee9c n\u0103ng kh\u00e1c nhau. C\u00e1c lo\u1ea1i b\u1ea3n ghi ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m:
\n\u2013 Ghi ch\u00fa A: \u0110\u1ecbnh tuy\u1ebfn m\u1ed9t t\u00ean mi\u1ec1n \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4. \u0110\u00e2y l\u00e0 c\u00e1ch c\u01a1 b\u1ea3n nh\u1ea5t \u0111\u1ec3 gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 web.
\n\u2013 B\u1ea3n ghi AAAA: \u0110\u1ecbnh tuy\u1ebfn t\u00ean mi\u1ec1n \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv6.
\n\u2013 CNAME (Canonical Name) record: \u0110\u00e2y l\u00e0 lo\u1ea1i b\u1ea3n ghi d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh t\u00ean mi\u1ec1n ph\u1ee5 (alias) tr\u1ecf \u0111\u1ebfn m\u1ed9t t\u00ean mi\u1ec1n kh\u00e1c, thay v\u00ec \u0111\u1ecba ch\u1ec9 IP. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ecbnh t\u00ean mi\u1ec1n con \u201cwww\u201d tr\u1ecf v\u1ec1 t\u00ean mi\u1ec1n ch\u00ednh, ho\u1eb7c \u0111\u1ec3 t\u00edch h\u1ee3p c\u00e1c d\u1ecbch v\u1ee5 v\u00e0o c\u00e1c n\u1ec1n t\u1ea3ng b\u00ean th\u1ee9 ba (ch\u1eb3ng h\u1ea1n nh\u01b0 GitHub Pages, Shopify).
\n\u2013 MX (Mail Exchange) record: \u0110\u00e2y l\u00e0 th\u00f4ng tin ch\u1ec9 \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 email ch\u1ecbu tr\u00e1ch nhi\u1ec7m nh\u1eadn email cho t\u00ean mi\u1ec1n \u0111\u00f3.
\n\u2013 TXT record: \u0110\u00e2y l\u00e0 lo\u1ea1i b\u1ea3n ghi v\u0103n b\u1ea3n, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c th\u1ef1c quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n (ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00f4ng c\u1ee5 qu\u1ea3n tr\u1ecb trang web c\u1ee7a Google), c\u0169ng nh\u01b0 \u0111\u1ec3 thi\u1ebft l\u1eadp c\u00e1c ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt email (SPF, DKIM, DMARC).
\n\u2013 NS (Name Server) ghi ch\u00e9p: X\u00e1c \u0111\u1ecbnh nh\u00f3m m\u00e1y ch\u1ee7 DNS ch\u00ednh th\u1ee9c n\u00e0o s\u1ebd cung c\u1ea5p d\u1ecbch v\u1ee5 gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n\n\n\n

Quy tr\u00ecnh c\u1ea5u h\u00ecnh v\u00e0 thi\u1ebft l\u1eadp TTL<\/h3>\n\n\n\n

Vi\u1ec7c c\u1ea5u h\u00ecnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong 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 DNS b\u00ean th\u1ee9 ba (ch\u1eb3ng h\u1ea1n nh\u01b0 Cloudflare, Alibaba Cloud DNS). B\u1ea1n c\u1ea7n th\u00eam ho\u1eb7c ch\u1ec9nh s\u1eeda c\u00e1c b\u1ea3n ghi DNS \u0111\u00e3 n\u00eau tr\u00ean. M\u1ed9t trong nh\u1eefng tham s\u1ed1 quan tr\u1ecdng l\u00e0 TTL (Time To Live \u2013 Th\u1eddi gian t\u1ed3n t\u1ea1i), which determines how long a DNS record is retained on various cache servers (\u0111\u01a1n v\u1ecb: gi\u00e2y).<\/p>\n\n\n\n

Th\u1eddi gian t\u1ed3n t\u1ea1i (TTL \u2013 Time To Live) ng\u1eafn h\u01a1n (ch\u1eb3ng h\u1ea1n 300 gi\u00e2y) c\u00f3 ngh\u0129a l\u00e0 c\u00e1c thay \u0111\u1ed5i s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng nhanh h\u01a1n tr\u00ean to\u00e0n c\u1ea7u, r\u1ea5t ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng c\u1ea7n di chuy\u1ec3n m\u00e1y ch\u1ee7 ho\u1eb7c th\u1ef1c hi\u1ec7n chuy\u1ec3n \u0111\u1ed5i kh\u1ea9n c\u1ea5p (failover). Th\u1eddi gian TTL d\u00e0i h\u01a1n (ch\u1eb3ng h\u1ea1n 86.400 gi\u00e2y) gi\u00fap gi\u1ea3m s\u1ed1 l\u1ea7n truy v\u1ea5n v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 gi\u1ea3i quy\u1ebft y\u00eau c\u1ea7u, nh\u01b0ng c\u00e1c thay \u0111\u1ed5i s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng ch\u1eadm h\u01a1n. Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh gi\u00e1 tr\u1ecb TTL xu\u1ed1ng m\u1ee9c th\u1ea5p h\u01a1n tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n nh\u1eefng thay \u0111\u1ed5i quan tr\u1ecdng<\/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

L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 DNS b\u00ean th\u1ee9 ba<\/h3>\n\n\n\n

So v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng DNS m\u1eb7c \u0111\u1ecbnh do nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n cung c\u1ea5p, vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 DNS b\u00ean th\u1ee9 ba chuy\u00ean nghi\u1ec7p (nh\u01b0 Cloudflare, AWS Route 53, Tencent Cloud DNSPod) mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3: t\u1ed1c \u0111\u1ed9 gi\u1ea3i quy\u1ebft y\u00eau c\u1ea7u truy c\u1eadp tr\u00ean to\u00e0n c\u1ea7u nhanh h\u01a1n, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u1ea3 n\u0103ng d\u1ef1 ph\u00f2ng cao h\u01a1n, kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS m\u1ea1nh m\u1ebd h\u01a1n, nhi\u1ec1u t\u00ednh n\u0103ng qu\u1ea3n l\u00fd l\u01b0u l\u01b0\u1ee3ng v\u00e0 b\u1ea3o m\u1eadt (ch\u1eb3ng h\u1ea1n nh\u01b0 t\u01b0\u1eddng l\u1eeda DNS), c\u00f9ng v\u1edbi kh\u1ea3 n\u0103ng ph\u00e2n b\u1ed5 t\u1ea3i v\u00e0 chuy\u1ec3n ti\u1ebfp l\u1ed7i m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n\n\n\n

Ch\u1ee7 \u0111\u1ec1 n\u00e2ng cao v\u00e0 Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h2>\n\n\n\n

Sau khi n\u1eafm v\u1eefng c\u00e1c thao t\u00e1c c\u01a1 b\u1ea3n, nh\u1eefng ch\u1ee7 \u0111\u1ec1 n\u00e2ng cao v\u00e0 th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t sau \u0111\u00e2y s\u1ebd gi\u00fap b\u1ea1n n\u00e2ng cao th\u00eam n\u1eefa tr\u00ecnh \u0111\u1ed9 qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n v\u00e0 DNS c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n

DNSSEC: T\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt DNS<\/h3>\n\n\n\n

C\u00e1c ph\u1ea3n h\u1ed3i t\u1eeb c\u00e1c truy v\u1ea5n DNS truy\u1ec1n th\u1ed1ng r\u1ea5t d\u1ec5 b\u1ecb s\u1eeda \u0111\u1ed5i ho\u1eb7c l\u1eeba \u0111\u1ea3o. DNSSEC (Domain Name System Security Extensions) cung c\u1ea5p m\u1ed9t c\u01a1 ch\u1ebf \u0111\u1ec3 x\u00e1c minh t\u00ednh ch\u00ednh x\u00e1c v\u00e0 to\u00e0n v\u1eb9n c\u1ee7a c\u00e1c ph\u1ea3n h\u1ed3i DNS b\u1eb1ng c\u00e1ch th\u00eam c\u00e1c ch\u1eef k\u00fd s\u1ed1 v\u00e0o d\u1eef li\u1ec7u DNS. Khi DNSSEC \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 y\u00ean t\u00e2m r\u1eb1ng k\u1ebft qu\u1ea3 gi\u1ea3i quy\u1ebft \u0111\u1ecba ch\u1ec9 \u0111\u01b0\u1ee3c nh\u1eadn \u0111\u1ebfn \u0111\u1ebfn t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 c\u00f3 th\u1ea9m quy\u1ec1n h\u1ee3p ph\u00e1p, ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1eeb nh\u1eefng ngu\u1ed3n gi\u1ea3 m\u1ea1o. 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 h\u1ed7 tr\u1ee3 vi\u1ec7c tri\u1ec3n khai DNSSEC m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng.<\/p>\n\n\n\n

\u1ee8ng d\u1ee5ng chi\u1ebfn l\u01b0\u1ee3c c\u1ee7a t\u00ean mi\u1ec1n con<\/h3>\n\n\n\n

C\u00e1c t\u00ean mi\u1ec1n con (nh\u01b0 blog.example.com, shop.example.com) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n chia c\u00e1c ph\u1ea7n ch\u1ee9c n\u0103ng kh\u00e1c nhau c\u1ee7a trang web m\u1ed9t c\u00e1ch logic. C\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t bao g\u1ed3m: s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n con cho c\u00e1c \u1ee9ng d\u1ee5ng ho\u1eb7c microservice \u0111\u1ed9c l\u1eadp; s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n con \u0111\u1ec3 l\u01b0u tr\u1eef c\u00e1c t\u00e0i nguy\u00ean t\u0129nh (nh\u01b0 static.example.com) nh\u1eb1m c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 t\u1ea3i trang; thi\u1ebft l\u1eadp c\u00e1c t\u00ean mi\u1ec1n con cho c\u00e1c khu v\u1ef1c ho\u1eb7c phi\u00ean b\u1ea3n ng\u00f4n ng\u1eef kh\u00e1c nhau (nh\u01b0 us.example.com). C\u00e1c b\u1ea3n ghi DNS c\u1ee7a t\u00ean mi\u1ec1n con c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd \u0111\u1ed9c l\u1eadp so v\u1edbi t\u00ean mi\u1ec1n ch\u00ednh.<\/p>\n\n\n\n

Gi\u00e1m s\u00e1t v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/h3>\n\n\n\n

Vi\u1ec7c thi\u1ebft l\u1eadp c\u01a1 ch\u1ebf gi\u00e1m s\u00e1t t\u00ean mi\u1ec1n v\u00e0 h\u1ec7 th\u1ed1ng DNS l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. B\u1ea1n c\u1ea7n th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra ng\u00e0y h\u1ebft h\u1ea1n c\u1ee7a t\u00ean mi\u1ec1n v\u00e0 x\u00e1c nh\u1eadn xem c\u1ea5u h\u00ecnh c\u00e1c b\u1ea3n ghi DNS c\u00f3 ch\u00ednh x\u00e1c hay kh\u00f4ng. H\u00e3y s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 tr\u1ef1c tuy\u1ebfn (nh\u01b0 dig, phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn c\u1ee7a nslookup) \u0111\u1ec3 ki\u1ec3m tra xem k\u1ebft qu\u1ea3 gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n tr\u00ean to\u00e0n th\u1ebf gi\u1edbi c\u00f3 nh\u1ea5t qu\u00e1n v\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 b\u1ea5t th\u01b0\u1eddng n\u00e0o kh\u00f4ng. Khi trang web g\u1eb7p s\u1ef1 c\u1ed1 kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c, h\u00e3y ki\u1ec3m tra tr\u01b0\u1edbc xem qu\u00e1 tr\u00ecnh gi\u1ea3i quy\u1ebft DNS c\u00f3 di\u1ec5n ra b\u00ecnh th\u01b0\u1eddng hay kh\u00f4ng, v\u00e0 x\u00e1c nh\u1eadn xem \u0111\u1ecba ch\u1ec9 IP ho\u1eb7c d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong c\u00e1c b\u1ea3n ghi A\/CNAME c\u00f3 c\u00f2n ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 hay kh\u00f4ng.<\/p>\n\n\n\n

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

T\u00ean mi\u1ec1n kh\u00f4ng \u0111\u01a1n thu\u1ea7n ch\u1ec9 l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 web \u0111\u01a1n gi\u1ea3n. Qu\u00e1 tr\u00ecnh \u0111\u0103ng k\u00fd c\u1ea9n th\u1eadn v\u00e0 x\u00e1c th\u1ef1c tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh ph\u00e1p l\u00fd, vi\u1ec7c qu\u1ea3n l\u00fd th\u00f4ng tin Whois h\u00e0ng ng\u00e0y, b\u1ea3o m\u1eadt v\u00e0 l\u1eadp k\u1ebf ho\u1ea1ch gia h\u1ea1n, c\u00f9ng v\u1edbi c\u1ea5u h\u00ecnh gi\u1ea3i quy\u1ebft DNS \u2013 bao g\u1ed3m vi\u1ec7c hi\u1ec3u r\u00f5 v\u00e0 thi\u1ebft l\u1eadp c\u00e1c lo\u1ea1i b\u1ea3n ghi (records), \u00e1p d\u1ee5ng ch\u00ednh s\u00e1ch TTL (Time To Live), v\u00e0 th\u1eadm ch\u00ed s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 chuy\u00ean nghi\u1ec7p c\u1ee7a b\u00ean th\u1ee9 ba \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt \u2013 t\u1ea5t c\u1ea3 t\u1ea1o n\u00ean m\u1ed9t h\u1ec7 th\u1ed1ng k\u1ef9 thu\u1eadt ho\u00e0n ch\u1ec9nh. Vi\u1ec7c n\u1eafm r\u00f5 v\u00e0 \u00e1p d\u1ee5ng c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t trong t\u1eebng kh\u00e2u n\u00e0y s\u1ebd gi\u00fap doanh nghi\u1ec7p tr\u1ef1c tuy\u1ebfn c\u1ee7a b\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c n\u1ec1n t\u1ea3ng m\u1ea1ng v\u1eefng ch\u1eafc, \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3. Khi c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n, vi\u1ec7c ch\u1ee7 \u0111\u1ed9ng quan t\u00e2m v\u00e0 \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt nh\u01b0 DNSSEC s\u1ebd gi\u00fap t\u00e0i s\u1ea3n k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a b\u1ea1n tr\u1edf n\u00ean linh ho\u1ea1t v\u00e0 b\u1ec1n v\u1eefng h\u01a1n trong t\u01b0\u01a1ng lai.<\/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

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

Sau khi ho\u00e0n t\u1ea5t vi\u1ec7c thanh to\u00e1n v\u00e0 qua qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c danh t\u00ednh theo quy \u0111\u1ecbnh, 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, v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft th\u00f4ng qua h\u1ec7 th\u1ed1ng DNS tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. Tuy nhi\u00ean, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng do s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a b\u1ed9 \u0111\u1ec7m DNS to\u00e0n c\u1ea7u, ng\u01b0\u1eddi d\u00f9ng \u1edf m\u1ed9t s\u1ed1 khu v\u1ef1c c\u00f3 th\u1ec3 ph\u1ea3i ch\u1edd \u0111\u1ee3i l\u00ean \u0111\u1ebfn 48 gi\u1edd m\u1edbi c\u00f3 th\u1ec3 truy c\u1eadp v\u00e0o t\u00ean mi\u1ec1n \u0111\u00f3 m\u1ed9t c\u00e1ch ho\u00e0n to\u00e0n, t\u00f9y thu\u1ed9c v\u00e0o gi\u00e1 tr\u1ecb TTL (Time To Live) m\u00e0 b\u1ea1n \u0111\u00e3 thi\u1ebft l\u1eadp tr\u01b0\u1edbc \u0111\u00f3 cho t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n\n\n\n

Sau khi th\u00f4ng tin trong b\u1ea3n ghi DNS \u0111\u01b0\u1ee3c thay \u0111\u1ed5i, t\u1ea1i sao vi\u1ec7c thay \u0111\u1ed5i \u0111\u00f3 l\u1ea1i m\u1ea5t th\u1eddi gian m\u1edbi \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi?<\/h3>\n\n\n\n

C\u00e1c thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi b\u1ea3n ghi DNS s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng ngay l\u1eadp t\u1ee9c tr\u00ean to\u00e0n th\u1ebf gi\u1edbi, b\u1edfi v\u00ec tr\u00ean Internet c\u00f3 nhi\u1ec1u m\u00e1y ch\u1ee7 \u0111\u1ec7m DNS \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau (ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet \u0111\u1ecba ph\u01b0\u01a1ng, h\u1ec7 \u0111i\u1ec1u h\u00e0nh, v.v.). Nh\u1eefng m\u00e1y ch\u1ee7 n\u00e0y s\u1ebd l\u01b0u tr\u1eef k\u1ebft qu\u1ea3 gi\u1ea3i quy\u1ebft truy c\u1eadp c\u0169 d\u1ef1a tr\u00ean gi\u00e1 tr\u1ecb TTL (Time To Live) \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong b\u1ea3n ghi DNS. Ch\u1ec9 khi c\u00e1c b\u1ea3n ghi \u0111\u1ec7m n\u00e0y h\u1ebft h\u1ea1n, ch\u00fang m\u1edbi y\u00eau c\u1ea7u l\u1ea1i th\u00f4ng tin m\u1edbi t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 ch\u00ednh th\u1ee9c. Do \u0111\u00f3, th\u1eddi gian m\u00e0 c\u00e1c thay \u0111\u1ed5i c\u00f3 hi\u1ec7u l\u1ef1c t\u01b0\u01a1ng \u1ee9ng v\u1edbi gi\u00e1 tr\u1ecb TTL m\u00e0 b\u1ea3n ghi \u0111\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp tr\u01b0\u1edbc khi b\u1ea1n th\u1ef1c hi\u1ec7n thay \u0111\u1ed5i.<\/p>\n\n\n\n

Th\u1ebf n\u00e0o l\u00e0 chi\u1ebfm \u0111o\u1ea1t t\u00ean mi\u1ec1n v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ph\u00f2ng ng\u1eeba?<\/h3>\n\n\n\n

Vi\u1ec7c chi\u1ebfm \u0111o\u1ea1t t\u00ean mi\u1ec1n th\u01b0\u1eddng x\u1ea3y ra khi k\u1ebb t\u1ea5n c\u00f4ng l\u1ea5y c\u1eafp m\u1eadt kh\u1ea9u t\u00e0i kho\u1ea3n c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, chuy\u1ec3n nh\u01b0\u1ee3ng quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n m\u1ed9t c\u00e1ch tr\u00e1i ph\u00e9p, ho\u1eb7c thay \u0111\u1ed5i th\u00f4ng tin DNS \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn c\u00e1c trang web \u0111\u1ed9c h\u1ea1i. C\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba bao g\u1ed3m: B\u1eadt x\u00e1c th\u1ef1c hai y\u1ebfu t\u1ed1 cho t\u00e0i kho\u1ea3n nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n v\u00e0 t\u00e0i kho\u1ea3n email; Ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 th\u00f4ng tin Whois v\u00e0 c\u00e0i \u0111\u1eb7t DNS \u0111\u1ec3 ph\u00e1t hi\u1ec7n b\u1ea5t k\u1ef3 thay \u0111\u1ed5i tr\u00e1i ph\u00e9p n\u00e0o; Kh\u00f3a ch\u1ee9c n\u0103ng chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n; S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 DNS c\u1ee7a b\u00ean th\u1ee9 ba \u0111\u00e1ng tin c\u1eady v\u00e0 b\u1eadt c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt \u0111i k\u00e8m.<\/p>\n\n\n\n

S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa record CNAME v\u00e0 record A trong vi\u1ec7c s\u1eed d\u1ee5ng l\u00e0 g\u00ec?<\/h3>\n\n\n\n

S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh n\u1eb1m \u1edf m\u1ee5c ti\u00eau m\u00e0 ch\u00fang h\u01b0\u1edbng t\u1edbi: \n\u2013 B\u1ea3n ghi A tr\u1ef1c ti\u1ebfp li\u00ean k\u1ebft t\u00ean mi\u1ec1n (domain name) ho\u1eb7c t\u00ean mi\u1ec1n con (subdomain) v\u1edbi m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4 c\u1ed1 \u0111\u1ecbnh. \n\u2013 B\u1ea3n ghi CNAME th\u00ec s\u1eed d\u1ee5ng m\u1ed9t t\u00ean mi\u1ec1n l\u00e0m t\u00ean hi\u1ec7u (alias) c\u1ee7a m\u1ed9t t\u00ean mi\u1ec1n kh\u00e1c, v\u00e0 h\u01b0\u1edbng t\u1edbi m\u1ed9t t\u00ean m\u00e1y ch\u1ee7 (host name) kh\u00e1c. \n\nM\u1ed9t h\u1ea1n ch\u1ebf quan tr\u1ecdng l\u00e0 b\u1ea3n ghi CNAME kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho t\u00ean mi\u1ec1n g\u1ed1c (root domain), t\u1ee9c l\u00e0 nh\u1eefng t\u00ean mi\u1ec1n kh\u00f4ng c\u00f3 ph\u1ea7n m\u1edf r\u1ed9ng (v\u00ed d\u1ee5: example.com), v\u00ec m\u1ed9t s\u1ed1 lo\u1ea1i b\u1ea3n ghi quan tr\u1ecdng kh\u00e1c (nh\u01b0 b\u1ea3n ghi MX) kh\u00f4ng th\u1ec3 t\u1ed3n t\u1ea1i c\u00f9ng l\u00fac v\u1edbi b\u1ea3n ghi CNAME. Th\u00f4ng th\u01b0\u1eddng, t\u00ean mi\u1ec1n g\u1ed1c s\u1eed d\u1ee5ng b\u1ea3n ghi A ho\u1eb7c b\u1ea3n ghi AAAA.<\/p>","protected":false},"excerpt":{"rendered":"

\u0110\u00e2y l\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt h\u1ec7 th\u1ed1ng v\u1ec1 to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi c\u1ee7a t\u00ean mi\u1ec1n (domain name). N\u1ed9i dung bao g\u1ed3m quy tr\u00ecnh \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n v\u00e0 nh\u1eefng \u0111i\u1ec1u c\u1ea7n l\u01b0u \u00fd, c\u00e1c nhi\u1ec7m v\u1ee5 c\u1ed1t l\u00f5i trong qu\u1ea3n l\u00fd h\u00e0ng ng\u00e0y (nh\u01b0 c\u1eadp nh\u1eadt th\u00f4ng tin, chi\u1ebfn l\u01b0\u1ee3c gia h\u1ea1n v\u00e0 b\u1ea3o m\u1eadt t\u00e0i kho\u1ea3n), \u0111\u1ed3ng th\u1eddi gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 nguy\u00ean l\u00fd gi\u1ea3i m\u00e3 DNS (Domain Name System), c\u00e1ch c\u1ea5u h\u00ecnh c\u00e1c lo\u1ea1i b\u1ea3n ghi ph\u1ed5 bi\u1ebfn, v\u00e0 l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 DNS b\u00ean th\u1ee9 ba. M\u1ee5c \u0111\u00edch c\u1ee7a h\u01b0\u1edbng d\u1eabn n\u00e0y l\u00e0 gi\u00fap ng\u01b0\u1eddi \u0111\u1ecdc n\u1eafm v\u1eefng nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 t\u00ean mi\u1ec1n t\u1eeb g\u00f3c \u0111\u1ed9 k\u1ef9 thu\u1eadt.<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"knowledge_category":[279],"class_list":["post-12375333","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\uff0cDNS\u8bb0\u5f55\u914d\u7f6e\uff0c\u57df\u540d\u7eed\u8d39\uff0cWhois\u9690\u79c1\u4fdd\u62a4\uff0c\u57df\u540d\u5b89\u5168\u7b56\u7565\uff0c\u57df\u540d\u89e3\u6790\u6307\u5357"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12375333","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\/12375333\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12375333"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12375333"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12375333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}