Call Quality Dashboard showing internal Microsoft EndPoint and IP Addresses

I am trying to use the Call Quality Dashboard to identify locations and users with poor quality.  I create a new detailed report with First and Second Address, Subnet, and Endpoint.  Over half of the traffic is not my network.  Based on a call with Microsoft Office 365 support, it is internal Microsoft machines and IP addresses.  Is this to be expected?  It seems like Microsoft servers should be passing through the actual machines names and IP addresses of users so we can identify users and locations with poor Skype quality.