dns reverse lookup on co-lo address space

[lamerfreak]

>Say if I have a domain name called domain.com which resolves
>to 192.168.0.0/24. Now if I decide to move my server farm (collection
>of 10 machines) to a co-lo's network (172.16.0.0/24), what do I need to
>do in order to resolve reverse lookup for these machines to my
>domain.com.
>
>Would I need to ping my registrar on this? If so, any insight (BCP)
>will be appreciated.

Talk to the owner of the address space.