Aliases and cnames query? ***

[Barry Margolin]

In article <Pine.BSF.4.10.9907161642190.50507-100000 at tardis.wwiv.com>,
Bob MacBob  <b_macbob at NOSPAM.hotmail.com> wrote:
>How can I determine the name of all hostnames which are mapped to a
>specific ip address?

You can't.  The only ones you can find are the ones that the administrator
of the reverse domain has created PTR records for, which may not match all
the A records that map to the IP address.  And there's no way provided to
invert CNAME queries.  Anyone in the world can create a A or CNAME record
pointing to a specific IP address or name, without the owner of that
destination knowing about it; there's no way to find them all.

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.