Recently moved to a small ISP, and have been asked to look at a file containing DNS entries for an IP range we own.
My question is, do we even need to have these DNS entries? My superviser is unable to answer as he is pretty new to this ISP world as well. Some of the entries i can recognise as devices and interfaces of some of our core devices, but most of the them seem to be just the reverse of the actual IP and not actually in use.
Can we get these entries deleted or do they actually serve some purpose?
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