can you ty this :

The idea is to search for this differently.

try to retrieve the private IP address of the Private Endpoint through its network interfaces (NICs).

and you identify the private DNS zones linked to the virtual network (VNet) where this Private Endpoint is connected (via the Private DNS zone links).

Within these private DNS zones, you search for DNS records that match those private IP addresses — these are the FQDNs

You can do it with powershell or python sdk azure easily