Will a wildcard CNAME take precedence over a named CNAME record?

Question

Generally wondering whether its possible to have both a CNAME entry with a " * " to domain and a seperate subdomain mapping i.e. like

*              | CNAME | domain.com
bla.domain.com | CNAME | some.example.com

Is this possible or does the * overwrite the "bla.domain.com" and therefore when you enter "bla.domain.com" you go to "domain.com" ?

Warner · Answer 1 · 2010-02-28 20:04:38Z

up vote 10 down vote

In BIND, the wildcard matches when another record does not exist. See http://en.wikipedia.org/wiki/Wildcard_DNS_record.

answered Feb 28 '10 at 20:04

Warner
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Not just BIND, any RFC 1912 DNS server will do this. – BrianEss Feb 28 '10 at 23:23

RFC1912 is telling operators how not to do wildcards. RFC 1035 is the one that servers comply with. – Alnitak Sep 16 '10 at 12:42

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Alnitak · Answer 2 · 2010-03-01 09:27:30Z

up vote 6 down vote

A more specific entry always overrides a wildcard, not the other way around.

For chapter and verse, see §4.3.3 of RFC 1034.

answered Feb 28 '10 at 23:55

Alnitak
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2 Answers