A Windows DNS server can have extra data specified in it's DNS entry to alert certain machines of the location of specific types of servers...for instance an entry might have a some of this data that specifies:
- To a machine to be ghosted where the Fog server is
- Specify to an Allworx Handset where the Allworx server is,
- Or specify to a Windows KMS workstation with a generic key where the KMS server is.
You're referring to location of service records (SRV). They're not Windows DNS specific.
With Powershell, you can retrieve them from your AD Domain easily.