Azure AD Join Error: 80192ee2

I have a few computers behaving in the same fashion and looking for some help.

When I try to join a computer via Azure AD - I get the following error:

Server error code: 80192ee2
Correlation ID: not available
Server Message: not available

I can't seem to find any information about this error. However, I learned that if I disable the Geo Filtering in our comapny firewall it will join the domain no problem. 

So the question is - how can I determine which country needs to be whitelisted to alleviate this problem.