2 hosts on 1 ip

[Kevin Darcy]

According to the RFC's, the target of an NS record must be a "canonical" name,
not an alias. NSI is perfectly within its rights to disallow CNAMEs. On the
larger question of whether they should be disallowing multiple references to
the same IP address, this is not mandated by the RFC's, but I can see why they
would want to do this -- it cuts down on the number of glue records which are
required to be carried in the gTLD's. Since those zones are huge anyway, this
is a Good Thing.

Why does it matter to you whether your ISP's nameserver shows up in your
NS records? It's not like regular users are going to be seeing NS records
anyway, and advanced users can figure out which ISP you're using just by
looking up the netblock which contains the address. I don't think you're
gaining much of anything here by "hiding" the name.


- Kevin

Hannes Van de Vel wrote:

> Hi all,
>
> We're using the slave nameserver of our ISP.  We want to 'hide' the server
> in the whois record by making an ns2.ourdomain.com which is a cname to the
> ns2 of our provider.  The only problem I have is that Network Solutions
> requires all name servers to be registered with a host form.  If I try to
> register our ns2 I get this error: IP address <...> already registered.
>
> It seems you can't make an 'alias' to a name server.  Though I've seen some
> hosting providers offering such a service to their resellers.