{"id":12370812,"date":"2026-03-15T16:37:24","date_gmt":"2026-03-15T08:37:24","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e5%9c%a8%e4%ba%92%e8%81%94%e7%bd%91%e7%9a%84%e4%b8%96%e7%95%8c%e4%b8%ad%ef%bc%8c%e5%9f%9f%e5%90%8d%e6%98%af%e6%af%8f%e4%b8%aa%e7%bd%91%e7%ab%99%e7%8b%ac%e4%b8%80%e6%97%a0%e4%ba%8c%e7%9a%84%e8%ba%ab\/"},"modified":"2026-03-15T16:48:19","modified_gmt":"2026-03-15T08:48:19","slug":"domain-unique-identity-and-access-point-for-websites","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/domain\/domain-unique-identity-and-access-point-for-websites\/","title":{"rendered":"Trong th\u1ebf gi\u1edbi internet, t\u00ean mi\u1ec1n (domain name) l\u00e0 d\u1ea5u hi\u1ec7u nh\u1eadn di\u1ec7n \u0111\u1ed9c \u0111\u00e1o v\u00e0 c\u1ed5ng truy c\u1eadp v\u00e0o m\u1ed7i trang web."},"content":{"rendered":"

Trong th\u1ebf gi\u1edbi internet, t\u00ean mi\u1ec1n (domain name) l\u00e0 d\u1ea5u hi\u1ec7u nh\u1eadn di\u1ec7n \u0111\u1ed9c \u0111\u00e1o v\u00e0 c\u1ed5ng truy c\u1eadp v\u00e0o m\u1ed7i trang web. N\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 ch\u00eca kh\u00f3a gi\u00fap ng\u01b0\u1eddi d\u00f9ng t\u00ecm th\u1ea5y b\u1ea1n m\u00e0 c\u00f2n l\u00e0 n\u1ec1n t\u1ea3ng cho h\u00ecnh \u1ea3nh th\u01b0\u01a1ng hi\u1ec7u, c\u1ea5u tr\u00fac k\u1ef9 thu\u1eadt v\u00e0 ho\u1ea1t \u0111\u1ed9ng kinh doanh tr\u1ef1c tuy\u1ebfn. \u0110\u1ed1i v\u1edbi c\u00e1c chuy\u00ean gia c\u00f4ng ngh\u1ec7, qu\u1ea3n tr\u1ecb vi\u00ean web v\u00e0 nh\u00e0 kh\u1edfi nghi\u1ec7p, vi\u1ec7c hi\u1ec3u s\u00e2u r\u1ed9ng v\u1ec1 m\u1ecdi kh\u00eda c\u1ea1nh c\u1ee7a t\u00ean mi\u1ec1n l\u00e0 ki\u1ebfn th\u1ee9c c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e2y d\u1ef1ng nh\u1eefng d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn \u1ed5n \u0111\u1ecbnh, c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 an to\u00e0n.<\/p>\n\n\n\n

C\u1ea5u tr\u00fac c\u1ed1t l\u00f5i v\u00e0 qu\u00e1 tr\u00ecnh ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt c\u1ee7a t\u00ean mi\u1ec1n (Domain Name)<\/h2>\n\n\n\n

M\u1ed9t t\u00ean mi\u1ec1n (domain name) ho\u00e0n ch\u1ec9nh \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb nhi\u1ec1u c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau, v\u00e0 vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u1ee9c ch\u00fang \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c l\u00e0 \u0111i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00e0 c\u1ea5u h\u00ecnh t\u00ean mi\u1ec1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n

T\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t v\u00e0 t\u00ean mi\u1ec1n c\u1ea5p hai<\/h3>\n\n\n\n

Ph\u1ea7n b\u00ean ph\u1ea3i c\u00f9ng c\u1ee7a t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u00ean mi\u1ec1n c\u1ea5p cao (top-level domain), v\u00ed d\u1ee5 nh\u01b0\u2026 .com<\/code>\u3001.org<\/code>\u3001.cn<\/code>\u3001.net<\/code> V.v. C\u00e1c t\u00ean mi\u1ec1n c\u1ea5p cao (TLD \u2013 Top-Level Domains) \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi c\u00e1c t\u1ed5 ch\u1ee9c ph\u00e2n ph\u1ed1i t\u00ean mi\u1ec1n tr\u00ean Internet v\u00e0 \u0111\u1ecba ch\u1ec9 s\u1ed1, v\u00e0 \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i ch\u00ednh: t\u00ean mi\u1ec1n c\u1ea5p cao ph\u1ed5 th\u00f4ng (generic top-level domains) v\u00e0 t\u00ean mi\u1ec1n c\u1ea5p cao qu\u1ed1c gia\/khu v\u1ef1c (country and region top-level domains). Ph\u1ea7n n\u1eb1m ngay b\u00ean tr\u00e1i t\u00ean mi\u1ec1n c\u1ea5p cao l\u00e0 t\u00ean mi\u1ec1n c\u1ea5p hai (second-level domains); \u0111\u00e2y l\u00e0 ph\u1ea7n m\u00e0 ng\u01b0\u1eddi d\u00f9ng t\u1ef1 ch\u1ecdn khi \u0111\u0103ng baidu<\/code>\u3001google<\/code> v.v.<\/p>\n\n\n\n

Ph\u1ea7n b\u00ean tr\u00e1i c\u1ee7a t\u00ean mi\u1ec1n c\u1ea5p hai l\u00e0 c\u00e1c t\u00ean mi\u1ec1n con (subdomains), \u0111\u01b0\u1ee3c ch\u1ee7 s\u1edf h\u1eefu t\u00ean mi\u1ec1n t\u1ea1o ra v\u00e0 qu\u1ea3n l\u00fd b\u1edfi ch\u00ednh h\u1ecd. M\u1ed9t s\u1ed1 v\u00ed d\u1ee5 ph\u1ed5 bi\u1ebfn v\u1ec1 t\u00ean mi\u1ec1n con bao g\u1ed3m: www<\/code>\u3001mail<\/code>\u3001blog<\/code> V.v. M\u1ed9t t\u00ean mi\u1ec1n ho\u00e0n ch\u1ec9nh, v\u00ed d\u1ee5 nh\u01b0\u2026 www.example.com<\/code>C\u1ea5u tr\u00fac c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh theo th\u1ee9 t\u1ef1 t\u1eeb ph\u1ea3i sang tr\u00e1i:com<\/code> \u0110\u00f3 l\u00e0 m\u1ed9t TLD (Top-Level Domain \u2013 T\u00ean mi\u1ec1n c\u1ea5p cao).example<\/code> l\u00e0 t\u00ean mi\u1ec1n c\u1ea5p hai,www<\/code> \u0110\u00f3 l\u00e0 m\u1ed9t mi\u1ec1n con (subdomain).<\/p>\n\n\n\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n<\/h3>\n\n\n\n

Khi ng\u01b0\u1eddi d\u00f9ng nh\u1eadp m\u1ed9t t\u00ean mi\u1ec1n v\u00e0o tr\u00ecnh duy\u1ec7t, \u0111\u1eb1ng sau \u0111\u00f3 l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng ph\u00e2n t\u00e1n c\u00f3 t\u00ean l\u00e0 DNS \u0111ang ho\u1ea1t \u0111\u1ed9ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Nhi\u1ec7m v\u1ee5 ch\u00ednh c\u1ee7a DNS l\u00e0 chuy\u1ec3n \u0111\u1ed5i c\u00e1c t\u00ean mi\u1ec1n d\u1ec5 \u0111\u1ecdc cho con ng\u01b0\u1eddi th\u00e0nh \u0111\u1ecba ch\u1ec9 IP m\u00e0 m\u00e1y t\u00ednh c\u00f3 th\u1ec3 nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (domain name resolution).<\/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

Qu\u00e1 tr\u00ecnh gi\u1ea3i m\u00e3 th\u00f4ng tin \u0111\u1ecba ch\u1ec9 IP th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u t\u1eeb b\u1ed9 nh\u1edb \u0111\u1ec7m DNS (Domain Name System) c\u1ee5c b\u1ed9. N\u1ebfu kh\u00f4ng t\u00ecm th\u1ea5y th\u00f4ng tin c\u1ea7n thi\u1ebft trong b\u1ed9 nh\u1edb \u0111\u1ec7m, h\u1ec7 th\u1ed1ng s\u1ebd th\u1ef1c hi\u1ec7n c\u00e1c y\u00eau c\u1ea7u truy v\u1ea5n \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 DNS recursive (DNS t\u00e1i quy). C\u00e1c m\u00e1y ch\u1ee7 DNS recursive n\u00e0y s\u1ebd l\u1ea7n l\u01b0\u1ee3t g\u1eedi y\u00eau c\u1ea7u truy v\u1ea5n \u0111\u1ebfn m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n g\u1ed1c (root domain server), m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n TLD (Top-Level Domain server), v\u00e0 c\u00e1c m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n chuy\u00ean tr\u00e1ch (authoritative domain servers) \u0111\u1ec3 t\u00ecm \u0111\u1ecba ch\u1ec9 IP t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u00ean mi\u1ec1n c\u1ea7n t\u00ecm. Sau khi nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 IP, h\u1ec7 th\u1ed1ng s\u1ebd tr\u1ea3 v\u1ec1 th\u00f4ng tin \u0111\u00f3 cho thi\u1ebft b\u1ecb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, t\u1eeb \u0111\u00f3 thi\u1ebft<\/p>\n\n\n\n

\u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n, qu\u1ea3n l\u00fd v\u00e0 c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t<\/h2>\n\n\n\n

Vi\u1ec7c ch\u1ecdn m\u1ed9t t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p v\u00e0 qu\u1ea3n l\u00fd n\u00f3 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean quan tr\u1ecdng \u0111\u1ec3 d\u1ef1 \u00e1n th\u00e0nh c\u00f4ng. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi s\u1ef1 xem x\u00e9t t\u1eeb nhi\u1ec1u kh\u00eda c\u1ea1nh nh\u01b0 k\u1ef9 thu\u1eadt, th\u01b0\u01a1ng hi\u1ec7u v\u00e0 ph\u00e1p l\u00fd.<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn m\u1ed9t t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p<\/h3>\n\n\n\n

Khi ch\u1ecdn t\u00ean mi\u1ec1n, b\u1ea1n n\u00ean tu\u00e2n theo m\u1ed9t s\u1ed1 nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n. \u0110\u1ea7u ti\u00ean, t\u00ean mi\u1ec1n ph\u1ea3i ng\u1eafn g\u1ecdn, d\u1ec5 nh\u1edb v\u00e0 d\u1ec5 \u0111\u00e1nh v\u1ea7n; tr\u00e1nh s\u1eed d\u1ee5ng d\u1ea5u g\u1ea1ch ch\u00e9o v\u00e0 nh\u1eefng c\u00e1ch vi\u1ebft ph\u1ee9c t\u1ea1p. Th\u1ee9 hai, h\u00e3y c\u1ed1 g\u1eafng ch\u1ecdn m\u1ed9t t\u00ean mi\u1ec1n\u2026 .com<\/code> Nh\u1eefng t\u00ean mi\u1ec1n thu\u1ed9c nh\u00f3m \u0111\u1ec9nh cao, ph\u1ed5 bi\u1ebfn nh\u1ea5t n\u00e0y c\u00f3 m\u1ee9c \u0111\u1ed9 nh\u1eadn di\u1ec7n cao nh\u1ea5t t\u1eeb ng\u01b0\u1eddi d\u00f9ng. T\u1eeb g\u00f3c \u0111\u1ed9 th\u01b0\u01a1ng hi\u1ec7u, t\u00ean mi\u1ec1n n\u00ean li\u00ean quan \u0111\u1ebfn t\u00ean th\u01b0\u01a1ng hi\u1ec7u ho\u1eb7c c\u00e1c t\u1eeb kh\u00f3a ch\u00ednh c\u1ee7a ho\u1ea1t \u0111\u1ed9ng kinh doanh. Cu\u1ed1i c\u00f9ng, nh\u1ea5t \u0111\u1ecbnh ph\u1ea3i ti\u1ebfn h\u00e0nh ki\u1ec3m tra xem t\u00ean mi\u1ec1n \u0111\u00f3 c\u00f3 tr\u00f9ng v\u1edbi c\u00e1c nh\u00e3n hi\u1ec7u \u0111\u00e3 \u0111\u0103ng k\u00fd hay<\/p>\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. Khi \u0111\u0103ng k\u00fd, b\u1ea1n c\u1ea7n cung c\u1ea5p th\u00f4ng tin li\u00ean h\u1ec7 ch\u00ednh x\u00e1c v\u00e0 h\u1ee3p l\u1ec7, \u0111\u1ed3ng th\u1eddi ch\u1ecdn th\u1eddi h\u1ea1n \u0111\u0103ng k\u00fd ph\u00f9 h\u1ee3p. Ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean b\u1eadt d\u1ecbch v\u1ee5 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 cho t\u00ean mi\u1ec1n \u0111\u1ec3 ng\u0103n th\u00f4ng tin li\u00ean h\u1ec7 c\u00e1 nh\u00e2n b\u1ecb c\u00f4ng khai, t\u1eeb \u0111\u00f3 gi\u1ea3m thi\u1ec3u nguy c\u01a1 nh\u1eadn th\u01b0 r\u00e1c v\u00e0 b\u1ecb qu\u1ea5y r\u1ed1i.<\/p>\n\n\n\n

C\u00e1c thao t\u00e1c quan tr\u1ecdng trong qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n<\/h3>\n\n\n\n

H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n cung c\u1ea5p nhi\u1ec1u c\u1ea5u h\u00ecnh quan tr\u1ecdng. B\u1ea3n ghi quan tr\u1ecdng nh\u1ea5t l\u00e0 b\u1ea3n ghi A, n\u00f3 tr\u1ecf t\u00ean mi\u1ec1n \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4; b\u1ea3n ghi AAAA \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u1ecf \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IPv6. B\u1ea3n ghi CNAME d\u00f9ng \u0111\u1ec3 tr\u1ecf b\u00ed danh t\u00ean mi\u1ec1n \u0111\u1ebfn m\u1ed9t t\u00ean mi\u1ec1n kh\u00e1c, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea5u h\u00ecnh CDN ho\u1eb7c d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y. B\u1ea3n ghi MX ch\u1ec9 \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 nh\u1eadn th\u01b0, r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi h\u1ed9p th\u01b0 doanh nghi\u1ec7p. B\u1ea3n ghi TXT th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n ho\u1eb7c c\u1ea5u h\u00ecnh ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt.<\/p>\n\n\n\n

H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n n\u00e2ng c\u1ea5p gi\u1ea5y ph\u00e9p s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n (domain name) k\u1ecbp th\u1eddi tr\u01b0\u1edbc khi n\u00f3 h\u1ebft h\u1ea1n, v\u00e0 b\u1eadt ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9ng gia h\u1ea1n \u0111\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng t\u00ean mi\u1ec1n b\u1ecb ng\u01b0\u1eddi kh\u00e1c \u0111\u0103ng k\u00fd tr\u01b0\u1edbc do h\u1ebft h\u1ea1n. Ngo\u00e0i ra, vi\u1ec7c sao l\u01b0u \u0111\u1ecbnh k\u1ef3 c\u00e1c b\u1ea3n ghi gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (domain name resolution records)<\/p>\n\n\n\n

B\u1ea3o m\u1eadt t\u00ean mi\u1ec1n v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 n\u00e2ng cao<\/h2>\n\n\n\n

Khi m\u00f4i tr\u01b0\u1eddng m\u1ea1ng ng\u00e0y c\u00e0ng tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p, b\u1ea3o m\u1eadt t\u00ean mi\u1ec1n \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t y\u1ebfu t\u1ed1 kh\u00f4ng th\u1ec3 b\u1ecf qua. C\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 cao c\u0169ng \u0111\u00e3 m\u1edf r\u1ed9ng gi\u1edbi h\u1ea1n v\u1ec1 kh\u1ea3 n\u0103ng c\u1ee7a t\u00ean mi\u1ec1n.<\/p>\n\n\n\n

Ph\u00f2ng ng\u1eeba vi\u1ec7c chi\u1ebfm \u0111o\u1ea1t v\u00e0 l\u1ea1m d\u1ee5ng t\u00ean mi\u1ec1n<\/h3>\n\n\n\n

Vi\u1ec7c chi\u1ebfm \u0111o\u1ea1t t\u00ean mi\u1ec1n l\u00e0 m\u1ed9t m\u1ed1i \u0111e d\u1ecda an ninh nghi\u00eam tr\u1ecdng; k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng th\u1ee9c b\u1ea5t h\u1ee3p ph\u00e1p \u0111\u1ec3 thay \u0111\u1ed5i th\u00f4ng tin gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n, khi\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn c\u00e1c trang web \u0111\u1ed9c h\u1ea1i. C\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba bao g\u1ed3m: \u0111\u1eb7t m\u1eadt kh\u1ea9u m\u1ea1nh cho t\u00e0i kho\u1ea3n \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n v\u00e0 qu\u1ea3n l\u00fd DNS, \u0111\u1ed3ng th\u1eddi k\u00edch ho\u1ea1t x\u00e1c th\u1ef1c hai y\u1ebfu t\u1ed1; ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 th\u00f4ng tin WHOIS v\u00e0 c\u00e1c b\u1ea3n ghi DNS c\u1ee7a t\u00ean mi\u1ec1n \u0111\u1ec3 ph\u00e1t hi\u1ec7n d\u1ea5u hi\u1ec7u b\u1ecb s\u1eeda \u0111\u1ed5i; l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS uy t\u00edn v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 an ninh t\u1ed1t.<\/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

Ngo\u00e0i ra, c\u1ea7n tri\u1ec3n khai c\u00f4ng ngh\u1ec7 DNSSEC. DNSSEC gi\u00fap b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u DNS b\u1eb1ng c\u00e1ch \u0111\u1eb7t d\u1ea5u ch\u1eef k\u00fd s\u1ed1, t\u1eeb \u0111\u00f3 ng\u0103n ch\u1eb7n hi\u1ec7u qu\u1ea3 c\u00e1c h\u00e0nh vi \u0111\u1ed9c h\u1ea1i trong b\u1ed9 \u0111\u1ec7m DNS (DNS caching poisoning) v\u00e0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ng\u01b0\u1eddi trung gian (man-in-the-middle attacks), \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c v\u00e0 to\u00e0n v\u1eb9n c\u1ee7a k\u1ebft qu\u1ea3 truy v\u1ea5n.<\/p>\n\n\n\n

Vai tr\u00f2 c\u1ee7a t\u00ean mi\u1ec1n trong ki\u1ebfn tr\u00fac hi\u1ec7n \u0111\u1ea1i<\/h3>\n\n\n\n

Trong c\u00e1c ki\u1ebfn tr\u00fac d\u1ef1a tr\u00ean n\u1ec1n t\u1ea3ng \u0111\u00e1m m\u00e2y v\u00e0 microservices hi\u1ec7n \u0111\u1ea1i, vai tr\u00f2 c\u1ee7a t\u00ean mi\u1ec1n kh\u00f4ng c\u00f2n gi\u1edbi h\u1ea1n \u1edf vi\u1ec7c ch\u1ec9 cho ph\u00e9p truy c\u1eadp v\u00e0o c\u00e1c trang web \u0111\u01a1n gi\u1ea3n n\u1eefa. Nh\u1edd v\u00e0o c\u01a1 ch\u1ebf gi\u1ea3i quy\u1ebft DNS linh ho\u1ea1t, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c chi\u1ebfn l\u01b0\u1ee3c tri\u1ec3n khai d\u1ea1ng \u201cblue-green deployment\u201d ho\u1eb7c \u201ccanary release\u201d, gi\u00fap chuy\u1ec3n m\u1ed9t ph\u1ea7n l\u01b0u l\u01b0\u1ee3ng ng\u01b0\u1eddi d\u00f9ng sang phi\u00ean b\u1ea3n d\u1ecbch v\u1ee5 m\u1edbi \u0111\u1ec3 ki\u1ec3m th\u1eed. Trong m\u00f4i tr\u01b0\u1eddng container h\u00f3a v\u00e0 c\u00e1c cluster Kubernetes, vi\u1ec7c t\u00ecm ki\u1ebfm c\u00e1c d\u1ecbch v\u1ee5 n\u1ed9i b\u1ed9 c\u0169ng th\u01b0\u1eddng d\u1ef1a v\u00e0o h\u1ec7 th\u1ed1ng DNS \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00ean c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 \u0111\u00f3.<\/p>\n\n\n\n

C\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n b\u1ed5 t\u1ea3i to\u00e0n c\u1ea7u (Global Load Balancing \u2013 GSLB) c\u0169ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00f4ng ngh\u1ec7 DNS th\u00f4ng minh. GSLB c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u ph\u00f9 h\u1ee3p nh\u1ea5t d\u1ef1a tr\u00ean v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y ch\u1ee7 v\u00e0 m\u1ee9c \u0111\u1ed9 t\u1ea3i, t\u1eeb \u0111\u00f3 n\u00e2ng cao t\u1ed1c \u0111\u1ed9 truy c\u1eadp c\u0169ng nh\u01b0 t\u00ednh s\u1eb5n s\u00e0ng c\u1ee7a d\u1ecbch v\u1ee5.<\/p>\n\n\n\n

M\u1ed1i quan h\u1ec7 gi\u1eefa t\u00ean mi\u1ec1n (domain name) v\u00e0 vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a trang web tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm (search engine optimization \u2013 SEO)<\/h2>\n\n\n\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00e0 qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u00e2u d\u00e0i v\u00e0 s\u00e2u r\u1ed9ng \u0111\u1ebfn kh\u1ea3 n\u0103ng \u0111\u01b0\u1ee3c c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm (search engines) nh\u00ecn th\u1ea5y trang web c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a c\u00e1c y\u1ebfu t\u1ed1 li\u00ean quan \u0111\u1ebfn t\u00ean mi\u1ec1n \u0111\u1ed1i v\u1edbi SEO<\/h3>\n\n\n\n

M\u1ed9t t\u00ean mi\u1ec1n ch\u1ee9a c\u00e1c t\u1eeb kh\u00f3a ch\u00ednh c\u00f3 th\u1ec3 truy\u1ec1n t\u1ea3i th\u00f4ng \u0111i\u1ec7p v\u1ec1 ch\u1ee7 \u0111\u1ec1 c\u1ee7a trang web \u0111\u1ebfn c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm, nh\u01b0ng hi\u1ec7u qu\u1ea3 n\u00e0y kh\u00f4ng c\u00f2n r\u00f5 r\u1ec7t nh\u01b0 tr\u01b0\u1edbc \u0111\u00e2y n\u1eefa. \u0110i\u1ec1u quan tr\u1ecdng h\u01a1n l\u00e0 tu\u1ed5i \u0111\u1eddi v\u00e0 l\u1ecbch s\u1eed c\u1ee7a t\u00ean mi\u1ec1n: m\u1ed9t t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd t\u1eeb l\u00e2u v\u00e0 c\u00f3 l\u1ecbch s\u1eed cung c\u1ea5p n\u1ed9i dung ch\u1ea5t l\u01b0\u1ee3ng, \u1ed5n \u0111\u1ecbnh th\u01b0\u1eddng nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 tin t\u01b0\u1edfng cao h\u01a1n t\u1eeb ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm.<\/p>\n\n\n\n

Vi\u1ec7c li\u1ec7u t\u00ean mi\u1ec1n c\u00f3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t ch\u1ee9c n\u0103ng m\u00e3 h\u00f3a HTTPS hay kh\u00f4ng l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1ee9 h\u1ea1ng trang web tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm. Ngo\u00e0i ra, t\u00ednh d\u1ec5 nh\u1edb v\u00e0 t\u00ednh \u0111\u1ea1i di\u1ec7n cho th\u01b0\u01a1ng hi\u1ec7u c\u1ee7a t\u00ean mi\u1ec1n c\u0169ng s\u1ebd \u1ea3nh h\u01b0\u1edfng gi\u00e1n ti\u1ebfp \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng li\u00ean k\u1ebft t\u1ef1 nhi\u00ean (backlinks) v\u00e0 l\u01b0\u1ee3ng truy c\u1eadp tr\u1ef1c ti\u1ebfp t\u1eeb ng\u01b0\u1eddi d\u00f9ng; nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong chi\u1ebfn l\u01b0\u1ee3c SEO. B\u1ea1n n\u00ean tr\u00e1nh s\u1eed d\u1ee5ng nh\u1eefng t\u00ean mi\u1ec1n \u0111\u00e3 t\u1eebng b\u1ecb c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm ph\u1ea1t, v\u00ec \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3<\/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

Chi\u1ebfn l\u01b0\u1ee3c qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n c\u00f3 l\u1ee3i cho SEO<\/h3>\n\n\n\n

Khi ti\u1ebfn h\u00e0nh c\u1ea3i t\u1ea1o trang web ho\u1eb7c thay \u0111\u1ed5i t\u00ean mi\u1ec1n, b\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng l\u1ec7nh chuy\u1ec3n h\u01b0\u1edbng v\u0129nh vi\u1ec5n (301) \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn ch\u00ednh x\u00e1c t\u1ea5t c\u1ea3 c\u00e1c trang t\u1eeb t\u00ean mi\u1ec1n c\u0169 sang c\u00e1c trang t\u01b0\u01a1ng \u1ee9ng tr\u00ean t\u00ean mi\u1ec1n m\u1edbi. \u0110\u1ed3ng th\u1eddi, b\u1ea1n c\u1ea7n n\u1ed9p c\u00e1c quy t\u1eafc li\u00ean quan \u0111\u1ebfn vi\u1ec7c c\u1ea3i t\u1ea1o trang web \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c li\u00ean k\u1ebft (link weight) \u0111\u01b0\u1ee3c truy\u1ec1n t\u1eeb t\u00ean mi\u1ec1n c\u0169 sang t\u00ean mi\u1ec1n m\u1edbi m\u1ed9t c\u00e1ch t\u1ed1i \u0111a. Trong tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng nhi\u1ec1u t\u00ean mi\u1ec1n, b\u1ea1n n\u00ean ch\u1ec9 \u0111\u1ecbnh m\u1ed9t t\u00ean mi\u1ec1n ch\u00ednh; c\u00e1c t\u00ean mi\u1ec1n c\u00f2n l\u1ea1i n\u00ean \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng qua l\u1ec7nh 301 \u0111\u1ec3 t\u1eadp trung tr\u1ecdng l<\/p>\n\n\n\n

H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng trang web c\u1ee7a b\u1ea1n\u2026 (Make sure the website you\u2019re working on\u2026) www<\/code> v\u00e0 kh\u00f4ng www<\/code> C\u00e1c phi\u00ean b\u1ea3n c\u1ea7n \u0111\u01b0\u1ee3c th\u1ed1ng nh\u1ea5t, v\u00e0 m\u1ed9t phi\u00ean b\u1ea3n \u01b0u ti\u00ean c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh th\u00f4ng qua l\u1ec7nh chuy\u1ec3n h\u01b0\u1edbng 301. H\u00e3y thi\u1ebft l\u1eadp ch\u00ednh x\u00e1c t\u00ean mi\u1ec1n \u01b0u ti\u00ean tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 Google Search Console, \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o r\u1eb1ng qu\u00e1 tr\u00ecnh gi\u1ea3i m\u00e3 DNS di\u1ec5n ra nhanh ch\u00f3ng v\u00e0 \u1ed5n \u0111\u1ecbnh; t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i c\u1ee7a m\u00e1y ch\u1ee7 c\u0169ng l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 \u0111\u01b0\u1ee3c xem x\u00e9t trong vi\u1ec7c x\u1ebfp h\u1ea1ng tr\u00ean c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm.<\/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; \u0111\u00f3 ch\u00ednh l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n c\u1ee7a danh t\u00ednh tr\u00ean m\u1ea1ng, k\u1ebft n\u1ed1i gi\u1eefa c\u00f4ng ngh\u1ec7, th\u01b0\u01a1ng hi\u1ec7u, b\u1ea3o m\u1eadt v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. T\u1eeb nh\u1eefng nguy\u00ean l\u00fd c\u01a1 b\u1ea3n v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 qu\u00e1 tr\u00ecnh gi\u1ea3i m\u00e3 t\u00ean mi\u1ec1n, \u0111\u1ebfn c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t trong vi\u1ec7c \u0111\u0103ng k\u00fd v\u00e0 qu\u1ea3n l\u00fd ch\u00fang, cho \u0111\u1ebfn c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt quan tr\u1ecdng v\u00e0 chi\u1ebfn l\u01b0\u1ee3c SEO, vi\u1ec7c n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c v\u1ec1 t\u00ean mi\u1ec1n m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng s\u1ebd gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 ch\u1ee7 doanh nghi\u1ec7p x\u00e2y d\u1ef1ng nh\u1eefng doanh nghi\u1ec7p tr\u1ef1c tuy\u1ebfn v\u1eefng ch\u1eafc, hi\u1ec7u qu\u1ea3 v\u00e0 an to\u00e0n h\u01a1n. Trong k\u1ef7 nguy\u00ean k\u1ef9 thu\u1eadt s\u1ed1, vi\u1ec7c l\u1ef1a ch\u1ecdn, c\u1ea5u h\u00ecnh v\u00e0 qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n m\u1ed9t c\u00e1ch th\u00f4ng minh l\u00e0 m\u1ed9t kho\u1ea3n \u0111\u1ea7u t\u01b0 quan tr\u1ecdng mang l\u1ea1i l\u1ee3i \u00edch l\u00e2u d\u00e0i.<\/p>\n\n\n\n

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

S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa t\u00ean mi\u1ec1n (domain name) v\u00e0 URL (Uniform Resource Locator) l\u00e0 g\u00ec?<\/h3>\n\n\n\n

T\u00ean mi\u1ec1n (domain name) l\u00e0 \u0111\u1ecba ch\u1ec9 m\u1ea1ng c\u1ed1t l\u00f5i c\u1ee7a m\u1ed9t trang web; v\u00ed d\u1ee5: example.com<\/code>URL (Uniform Resource Locator) l\u00e0 c\u00f4ng c\u1ee5 d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ee7a m\u1ed9t t\u00e0i nguy\u00ean tr\u00ean m\u1ea1ng. \u0110\u00f3 l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 web ho\u00e0n ch\u1ec9nh, bao g\u1ed3m nhi\u1ec1u th\u00e0nh ph\u1ea7n nh\u01b0 giao th\u1ee9c (protocol), t\u00ean mi\u1ec1n (domain name), v\u00e0 \u0111\u01b0\u1eddng d\u1eabn (path). V\u00ed d\u1ee5:https:\/\/www.example.com\/blog\/article.html<\/code> \u0110\u00e2y l\u00e0 m\u1ed9t URL, trong \u0111\u00f3\u2026 www.example.com<\/code> \u0110\u00f3 l\u00e0 t\u00ean mi\u1ec1n (domain name).<\/p>\n\n\n\n

T\u00ean mi\u1ec1n sau khi \u0111\u0103ng k\u00fd c\u00f3 thu\u1ed9c v\u1ec1 t\u00f4i v\u0129nh vi\u1ec5n kh\u00f4ng?<\/h3>\n\n\n\n

Kh\u00f4ng ph\u1ea3i v\u1eady. Vi\u1ec7c \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo h\u00ecnh th\u1ee9c tr\u1ea3 ph\u00ed h\u00e0ng n\u0103m \u0111\u1ec3 s\u1eed d\u1ee5ng. B\u1ea1n ch\u1ec9 s\u1edf h\u1eefu quy\u1ec1n s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n trong th\u1eddi gian h\u1ee3p \u0111\u1ed3ng \u0111\u0103ng k\u00fd c\u00f2n hi\u1ec7u l\u1ef1c. B\u1ea1n c\u1ea7n ph\u1ea3i n\u00e2ng c\u1ea5p (gia h\u1ea1n) t\u00ean mi\u1ec1n tr\u01b0\u1edbc khi h\u1ebft h\u1ea1n; n\u1ebfu kh\u00f4ng, t\u00ean mi\u1ec1n s\u1ebd b\u01b0\u1edbc v\u00e0o giai \u0111o\u1ea1n \u201c\u0111\u01b0\u1ee3c thu h\u1ed3i\u201d v\u00e0 cu\u1ed1i c\u00f9ng s\u1ebd \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng \u0111\u1ec3 ng\u01b0\u1eddi kh\u00e1c c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd l\u1ea1i. \u0110\u1ec3 tr\u00e1nh qu\u00ean vi\u1ec7c n\u00e0y,<\/p>\n\n\n\n

DNS Propagation l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao c\u1ea7n th\u1eddi gian?<\/h3>\n\n\n\n

Khi b\u1ea1n thay \u0111\u1ed5i c\u00e1c b\u1ea3n ghi DNS c\u1ee7a t\u00ean mi\u1ec1n, c\u00e1c m\u00e1y ch\u1ee7 DNS recursive tr\u00ean to\u00e0n th\u1ebf gi\u1edbi c\u1ea7n th\u1eddi gian \u0111\u1ec3 c\u1eadp nh\u1eadt c\u00e1c b\u1ea3n ghi c\u0169 trong b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a ch\u00fang; qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cDNS propagation\u201d. Do s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 c\u00e0i \u0111\u1eb7t TTL (Time To Live) v\u00e0 kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef d\u1eef li\u1ec7u trong b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a c\u00e1c m\u00e1y ch\u1ee7 tr\u00ean to\u00e0n c\u1ea7u, vi\u1ec7c thay \u0111\u1ed5i c\u00f3 hi\u1ec7u l\u1ef1c ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 m\u1ea5t t\u1eeb v\u00e0i ph\u00fat \u0111\u1ebfn 48 gi\u1edd.<\/p>\n\n\n\n

T\u00f4i c\u00f3 th\u1ec3 \u1ea9n th\u00f4ng tin \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh kh\u00f4ng?<\/h3>\n\n\n\n

\u0110\u01b0\u1ee3c. H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u0111\u1ec1u cung c\u1ea5p d\u1ecbch v\u1ee5 \u201cB\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 cho th\u00f4ng tin WHOIS\u201d. Khi b\u1ea1n b\u1eadt t\u00ednh n\u0103ng n\u00e0y, trong c\u00e1c truy v\u1ea5n WHOIS c\u00f4ng khai, t\u00ean c\u00e1 nh\u00e2n, \u0111\u1ecba ch\u1ec9, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i v\u00e0 email c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c thay th\u1ebf b\u1eb1ng th\u00f4ng tin \u0111\u1ea1i di\u1ec7n do nh\u00e0 \u0111\u0103ng k\u00fd cung c\u1ea5p, gi\u00fap b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 gi\u1ea3m b\u1edbt email r\u00e1c.<\/p>\n\n\n\n

Subdomain hay \u0111\u01b0\u1eddng d\u1eabn th\u01b0 m\u1ee5c n\u00e0o t\u1ed1t h\u01a1n cho SEO?<\/h3>\n\n\n\n

\u0110i\u1ec1u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee9c \u0111\u1ed9 li\u00ean quan c\u1ee7a n\u1ed9i dung. Th\u00f4ng th\u01b0\u1eddng, nh\u1eefng n\u1ed9i dung c\u00f3 m\u1ee9c \u0111\u1ed9 li\u00ean quan cao v\u00e0 thu\u1ed9c c\u00f9ng m\u1ed9t ch\u1ee7 \u0111\u1ec1 ch\u00ednh s\u1ebd ph\u00f9 h\u1ee3p h\u01a1n khi \u0111\u01b0\u1ee3c \u0111\u1eb7t trong c\u00e1c th\u01b0 m\u1ee5c con (subdirectories) c\u1ee7a c\u1ea5u tr\u00fac th\u01b0 m\u1ee5c. V\u00ed d\u1ee5: domain.com\/blog\/article<\/code>Vi\u1ec7c n\u00e0y gi\u00fap t\u1eadp trung tr\u1ecdng l\u01b0\u1ee3ng (weight) c\u1ee7a c\u00e1c t\u00ean mi\u1ec1n (domain names) m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Ng\u01b0\u1ee3c l\u1ea1i, \u0111\u1ed1i v\u1edbi c\u00e1c trang web c\u00f3 nh\u1eefng kh\u00e1c bi\u1ec7t l\u1edbn v\u1ec1 ch\u1ee9c n\u0103ng, s\u1ea3n ph\u1ea9m ho\u1eb7c \u0111\u1ecba l\u00fd v\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ed9c l\u1eadp, vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c t\u00ean mi\u1ec1n con (subdomains) s\u1ebd ph\u00f9 h\u1ee3p h\u01a1n. blog.domain.com<\/code> \u6216 us.domain.com<\/code>C\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm s\u1ebd coi c\u00e1c t\u00ean mi\u1ec1n con nh\u01b0 nh\u1eefng th\u1ef1c th\u1ec3 t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ed9c l\u1eadp.<\/p>","protected":false},"excerpt":{"rendered":"

B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng ki\u1ebfn th\u1ee9c k\u1ef9 thu\u1eadt v\u00e0 qu\u1ea3n l\u00fd li\u00ean quan \u0111\u1ebfn t\u00ean mi\u1ec1n nh\u01b0 m\u1ed9t y\u1ebfu t\u1ed1 \u0111\u1ea1i di\u1ec7n c\u1ed1t l\u00f5i c\u1ee7a trang web. N\u1ed9i dung bao g\u1ed3m c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u1ee7a t\u00ean mi\u1ec1n, nguy\u00ean l\u00fd gi\u1ea3i quy\u1ebft DNS, quy tr\u00ecnh \u0111\u0103ng k\u00fd, c\u00e1ch l\u1ef1a ch\u1ecdn v\u00e0 qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n; \u0111\u1ed3ng th\u1eddi ph\u00e2n t\u00edch s\u00e2u r\u1ed9ng c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba m\u1ed1i \u0111e d\u1ecda \u0111\u1ed1i v\u1edbi b\u1ea3o m\u1eadt t\u00ean mi\u1ec1n, \u1ee9ng d\u1ee5ng n\u00e2ng cao c\u1ee7a t\u00ean mi\u1ec1n trong ki\u1ebfn tr\u00fac \u0111\u00e1m m\u00e2y hi\u1ec7n \u0111\u1ea1i, c\u0169ng nh\u01b0 t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c y\u1ebfu t\u1ed1 li\u00ean quan \u0111\u1ebfn t\u00ean mi\u1ec1n \u0111\u1ed1i v\u1edbi<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"knowledge_category":[279],"class_list":["post-12370812","knowledge_post","type-knowledge_post","status-publish","hentry","knowledge_category-domain"],"acf":{"site_seo_keywords":"\u57df\u540d,\u57df\u540d\u89e3\u6790,DNS,\u57df\u540d\u6ce8\u518c,\u57df\u540d\u5b89\u5168,SEO\u4f18\u5316,\u57df\u540d\u52ab\u6301\u9632\u8303,\u5168\u7403\u8d1f\u8f7d\u5747\u8861"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12370812","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\/12370812\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12370812"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12370812"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12370812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}