KDC reachable API or KDC no-op proto transaction?

[swbell]

I am working on a product feature that helps the user diagnose problems when
communicating with Active Directory.  One problem that users have is when
they remove domain controllers manually, and end up leaving faulty
_kerberos._udp.domain.xxx records in their DNS.

Is there any API or no-op protocol exchange that can be performed to see if
a KDC is reachable?

This API would be used to log info into a system log, or provide UI feedback
to a user that is checking domain connectivity.