Changing DNS host records

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Hello

It has been over a decade since I’ve done this and need some help refreshing my memory.

I have many customers that have registered their domains against my authoritative servers (DNS-AUTH3.CROCKER.COM).    I need to move that machine to a different network/IP address.    I’ve made the updates in my domain (crocker.com) but I think I also need to update the host glue records in the gtld-servers as well.   How do I go about doing that?   Ultimately the customers need to update their registration with our new authoritative servers, many have but we still have some stragglers I don’t want to break when I shutdown the old servers.

Thanks

-Matt


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