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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?

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Don't do it. This causes "lame servers". – Marc B Oct 24 '11 at 3:38
Is this a big problem if it is only a temporary thing? The main reason for wanting to do this is due to the time it will take up update all domains to the new nameservers, which exceeds the amount of time I have to complete the hosting migration. – Luke McCallum Oct 24 '11 at 3:42
Can you do it? Well you can use cnames to point anything to just about anything. Should you do it? That rather depends on how you feel about things working correctly. – DJ Pon3 Oct 24 '11 at 8:01
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1 Answer

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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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