Multiple domains pointed to the same IP

glen herrmannsfeldt gah at ugcs.caltech.edu
Wed Dec 8 20:52:41 UTC 1999


"Vijay" <vijay.mayadas at winwin.com> writes:

>I understand that there can only be one entry in the PTR file which gives
>one domain name for a given IP address when a reverse lookup is performed.

>Does this mean you cannot have mutiple domains map to a single IP on the
>Internet e.g.:

>one.mydomain.com    -> 192.1.2.3
>one.anotherdomain.com -> 192.1.2.3

As far as I know, multiple PTR are legal, but usually not recommended.

You can have multiple A or CNAME pointing to A for a name, but the PTR
only needs to point to one name.  Usually I find one preferred name.

-- glen


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