Currently the DNS Monitors support Multi-Region Multi-Name Server configurations per Domain but when there is an issue with name resolution doesn't give which Name Server failed the check. It will give an IP address if the error comes from a timeout, but not for a record being absent. When using the product for monitoring DNS over multiple Name Servers this creates a blindspot and raises MTTR until manual investigation can occur.
It would be great if Name Servers were explicitly listed as success/failure when an error is raised so we can reduce the time to resolution of the issue.