We had a colo server and registered a domain for it. When we did that we had to provide the name and the IP address of the nameservers (pointing to the server) as the nameserver names were within that domain (let's call them ns.example.com and ns2.example.com)
Over time various people also hosted with us and we just got them to change their authoritative nameservers to ns and ns2.example.com.
We're in the process of migrating services to a shiny new server at a different location with (obviously) different IP addresses.
We have now moved all the content for us and others and updated the DNS records to point A/MX etc to the new server.
Now we wish to move the DNS service itself with the aim of getting rid of the original server entirely.
So the question is; if we just change the DNS for example.com and point ns and ns2 A records to the new server will it work (allowing time to propogate with DNS served from both servers)?
My concern is the original need to register the IP addresses of the nameservers. Do we need to re-register them somehow?
I really want to keep our nameserver names the same to stop everyone having to change the nameservers for their domains.
Hope that's clear, thanks in advance.