2 different dns on same IP?

Total newbie question:

Is it possible to have two different sets of DNS resolve to the same IP address? For example, can I have ns1.domain1.com and ns2.domain1.com point to an IP address and also create ns1.domain2.com and ns2.domain2.com to point to the same IP? Or, do I need different IPs for each set of DNS?

Thanks.

Red

 

 

 

 

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