Re: how to check for hostnames of wildcard-domains

["A. Ramos" <aramosf () unsec net>]

> Is there a way to distinguish the *.dom.tld-matching from a real
> existing A-Record using a ns-lookup alone?

http://www.faqs.org/rfcs/rfc1034.html

A * label appearing in a query name has no special effect, but can be
used to test for wildcards in an authoritative zone; such a query is the
only way to get a response containing RRs with an owner name with * in
it.  The result of such a query should not be cached.

# host -t a "*.unsec.net"
Host *.unsec.net not found: 3(NXDOMAIN)

f# host -t a "*.isgay.com"
*.isgay.com is an alias for isgay.com.
isgay.com has address 66.249.137.17
*.isgay.com is an alias for isgay.com.
*.isgay.com is an alias for isgay.com.
isgay.com mail is handled by 0 isgay.com.


--
A. Ramos  <aka dab>
mailto: <aramosf () unsec net>
http://www.unsec.net 


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