A couple of possibilities here.
https://gallery.technet.microsoft.com/Gather-DNS-settings-from-fec23eaa
Hi Rraymont,
I suppose we could use debug logging.
Enable debug logging on DNS server, then all the queries sent to it would be recorded to a log file.
Here are the steps:
- Open DNS manager and right click DNS server.
- Open Properties and click Debug Logging tab.
- We could choose to log only incoming queries.
Then we could analyze the log file to find out the devices which are referring to the DNS server.
Here is the guide for reading the log file:
View a DNS server debug log file:
https://technet.microsoft.com/en-us/library/cc776445(v=ws.10).aspx
The Fun in DNS Debug Logging - Read the DNS Debug Log:
http://social.technet.microsoft.com/wiki/contents/articles/13640.the-fun-in-dns-debug-logging-read-the-dns-debug-log.aspx
Best Regards,