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Accepted
Luke McCallum
Asked: 2011-10-24 19:29:39 +0800 CST

Can I use a CNAME to point to a 3rd Parties NS Servers? [duplicate]

  • 772

Possible Duplicate:
In DNS can an IN NS point to a CNAME?

I am in the process of migrating hosting providers. Currently I have significant number of domains pointed at my current NS servers. My new provider has their own NS server that I will need to update all my hosted domains to in order for them to point to the new server.

As updating a few hundred domains with new NS records is going to take a LONG time I was wondering if it was possible to point my current NS records at the new hosts NS's using CNAMES?

i.e

ns1.myns.com => CNAME => ns1.newns.com
ns2.myns.com => CNAME => ns2.newns.com

All domains that are currently pointing to ns1.myns.com would then actually be pointing to ns1.newns.com where the DNS records have been mirrored and are correctly pointing to the new servers IP.

Does that make sense? Will this work?

domain-name-system hosting cname-record nameserver

2 Answers

  1. Best Answer

    Don't do it. If you have access to the DNS records of nsX.myns.com then change the A record to point to the A record of nsX.newns.com. This is how it is designed to work.

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  2. It would be nice if its possible, but it works only on some clients, and others it fails.

    The thing is that the name server on the right side of the cname will think that its name is being used (delegated) since the delegated name servers use cname that point to their name servers. If you use an IP (or a sub domain/child name server), their name servers will check for their names and not see any delegation to their name servers (even though their ips are being used) and may take the domain offline. (seen that problem)

    Its sad cnames are not supported 100% in ns records, but some dns clients expect an immediate resolvable answer and fail on cnames (very bad programming).

    Sometimes I think those BIND programmers should be shot, as its really easy to break BIND servers and spoof results, and on top of that they don't program things that seem logical.

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