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??? ???????:235 ?????:2026-01-19 10:55:24 ??????: NiceNIC

Why the Main Domain Works but the “www” Version Doesn’t

?? ??? ?? ????? ?????? ??? ???? example.com ???? ??? ??????? ???? ???? www.example.com ?? ??? ???? ???? ????? ??? ??? ????! ??? ????? ????? ??????? ?????? ?? ????? ????????? ?????? ?? ???? ???? ??????? DNS ?????.

?? ??? ??????? ????? ????? ???? ?????? ??????? ???? (???? "www")? ??? ???? "www" ?? ????. ????? ????? ????? ????? ??? ????? ????? ??? ??????? ????? ?? ???? ????? ?????????? ?????? ??????? ?????? ??? ????? ?? ??????? ???? ?????? ??? ?????.

?? ????? ??? ?????? ??????? ????? "www"?

?????: ?????? ??????? ? ?????? ?????? "www" ??? ?????? ??????? ?????? ?? ???? ????? ???????? (DNS).

????? ?? ???? ?????? ??????? (??? example.com) ??? ??? A (????? IP) ?? ???? ?? ???? CNAME (??? ??????) ???? ??? ???? ???.

???? ?? ??? ????? ?????? ?????? "www" (??? www.example.com) ???? CNAME ???? ??? ?????? ??????? (example.com).

??? ??? ???????: ???? DNS ?? ???? ??????? ???????? ??? ?????? ??????? ??????? ?????? "www". ??? ???? ??? ??? ?? ??? ????? ??? www ???? ????? ???? ??? ?????? ???????? ??? ??? ????? ???? "www".

???? ??? ????? ????? DNS:

example.com A 192.0.2.1 ← ?????? ??????? ???? ???? ???.

www.example.com (?? ???? ???) ← ?? ???? ??? CNAME ?? A ????? www.

?? ??? ??????? ?? ????? ?????? ????? ?????? www.example.com ?? ?????? ??? ?????? ???? ?? ???? ??? ?????? ??? ?????? ???????.

????? ?? ???? ???? "www"?
???? ??? ????? ????? ???? ???? www ?? ????? ?? ???? ????? ?????? ??????? ????:

1. ??? DNS ????? ?? "www" ?????

??? ??? ??? CNAME ?? ??? A ?????? ?????? www ???????? ????? ????? ?? ???? ????? ????? ?????????? ?????? ??? ???? www. ??? ?? ????? ?????? ?????? ???? ???????.

?????? ??????? ????: ?????? ??????? ??? ???? ???? ???? A ?? CNAME.
??? "www" ?????: ??? ?? ??? ????? ??? CNAME ?? A ?????? ?????? "www"? ??? ?????? DNS ???.

2. ???? ??? A ??? ?????? ???????

?? ???? ?? ???????? ????? ?????? ??????? ??? ??? A ???? ??? ????? IP? ??? ?? ???? ??? CNAME ?? ??? A ????? "www". ???? ???? ?????? ?????? ????? ??????? ?????? ??? www.example.com???? ?? ????? "?????? ??? ??????".

3. ????? CNAME ?????? DNS

??? CNAME ?? ??????? ???????? ?????? ?????? ?????? "www". ??? ???? ??? ??????? ??? CNAME ??? ???????? ??????? (??? "www"). ??? ?? ????? ??? CNAME ?? ???? ????? ?????? ??????? (example.com)? ????? ??? ??? ?????? ??? ?? ???? ?????? ??????? ?? ????? ??? ??? CNAME ??? ?????? DNS.

???: ??? ?? ????? ?????? ??????? ?????? ??? ??? A ?? AAAA ??? ???? ?? ????? ??? ??? CNAME.

4. ????? ???? ????? ?? ???? "www"
??? ?? ???? ????? DNS ?????? ??? ?? ???? ????? ???? ????? ????? ?????? ??? www. ??? ?? ??? ???? ????? ????? ?? (??? Apache ?? Nginx) ??????? ??????? ?? ??????? ??? www.example.com? ??? ????? ?????????? ?? ?????? ??? ????? ??? ??? ?????? ?? ?????.

????? ????? ??? ??? ???? "www": ???? ???? ?????
?????? 1: ???? ?? ????? DNS ?????? ?? "www"
?????? ????? ??? ?????? ??? ??? ???? ????? DNS ?? www ????? ???? ????.

?? ?????? ?????? ??? ???? ?????? ????? DNS ????? ?? ????? ?? ????? DNS ??????.
???? ?? ???? ??? CNAME ?? A ?????? ?????? www. ????? ??????? ???????? ???????:

??????: www
?????: CNAME
??????: example.com

??
??????: www
?????: A
??????: 192.0.2.1 (????? IP ??????)

??? ???? ??? ??????? ?????? ?? ??? ?????? ??? ?????? ?????? www ?? ??? ??? ???? ????.

?????? 2: ??????? ????? ??? DNS
?????? ????? ??? ???????? ??? nslookup ?? DNSstuff ?????? ?? ??? ???? ???? www ???? ???? ????. ??????? ??? ??????? ??? ?????? ??? ???? ????? DNS ????? ???? ???? ?? ??? ??? ???? ????? ?? ???????..

?????? 3: ???? ?? ?? ????? ???? ????? ???? "www"
???? ?? ????? ???? ????? ????? ?? ?????? ?? ??? ???? www.example.com ????? ????.

?????? 4: ????? ????? ????? 301 (???????)
??? ??? ???? ???? ????? ?? ????? (??? www ?? ???? www) ????? ?????? ????????? ????? ????? ????? ????? 301. ??? ????? ???? ?????? ?? ?????? ??? ??????? ??? ???????? ??? ???? ?? ????? ?? ????? SEO.

??????? ???????: ????? ??????? ?????
?1: ????? ???? ????? ?? example.com ???? ?? www.example.com?

?: ???? ??? ????? ??? ?????? ?????? www ?? ????? ??? ????? DNS ?????. ???? ?? ???? ??? CNAME ?? ??? A ?????? ?????? www.
?2: ???? ???? ??? ???? ????? DNS ????? ???? ???? “www” ?? ???? ?? ?????

?: ???? ?? ????? ???? ????? ????? ??. ?? ????? ??? ?????? ?? ?? www ?? ?????? ???? ????? ?????? ???? ????? ????? ??.
?3: ?? ?????? ??????? ??? CNAME ?????? ????????

?: ??? ????? CNAME ????? ??? ??? ???????? ??????? (??? www)? ????? ?????? ??????? (example.com).
?4: ??? ????? ?? ?? ????? ???? ?????? ?? ????? www?

?: ???? ?????? ?? ????? ????? DNS ??? ?? ???? www ? ???? ???? www. ???????? ??? ???? ?? ?????? ????? ????? 301 ????? ??????? ???? ????? ??? ???? ?????.

???????: ???? ?? ??? ????? ?????? ??? ???? ?????
?? ???? ??? ??????? ??? ????? ??????? ??????? ?????? "www"? ????? ????? ?????? ???? ???? ?? DNS ? ???? ?????? ????? ?????? ?? ?? ????? ???? ?????? ??????? ??? ????? ?? ??????? ???? ?????? ??? ?????.
??? ????? ????? ?? ?? DNS ?? ????? ???? ?????? ?????? ??????? ??????? ?? ??? ?????? ??????? ??? ???? ????? ??????? ??? ????? ???? ??????.
Nicenic ?? ?????? ??????? ???????? ???????? ????????? ????? ??????? ???????? ??? ??????? ??? ???? ????? ????? ?????? ?????? ?????? ?????? ????? ???? ????? ?????????? ???? ??????? ???????? ??????.

????? ??? ???:

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??????? ???????: ?? ???? ???? ?? ???? ????? ???? ????? DNS ??? ?????? ????????
??????? ???????: ?? ?? .su? ?? ?? ????? ?????? ?? ?????? .su

??? ?????? ????s ...

????? ???? ?????? ??????? ??? ???? ????? “www”