When troubleshooting DNS resolver service, you can use the DNS resolver service
diagnostics UI to retrieve a summary of DNS resolver service services running on the
Service Point v4 instance. The DNS resolver service diagnostics can be accessed through
your browser through the following URL:
http://<service_point_v4_IP>:2021/ui
The DNS resolver service diagnostics UI displays the overall health status of the DNS resolver service, the service instance ID, the Service Point v4 ID, the current software version running on the service point, and the status and version of each service.
Click the header of a column within the table to sort the services.
Click 
to download the full DNS resolver service diagnostics JSON
file.