APNIC - DNS Diagnostics

DNS Diagnostics

The purpose of this is to provide a diagnostic tool to see if a given nameserver and/or zone has been set up in a consistent fashion.
Providing only a zone requests a check on the zone as it is currently listed in the DNS. Providing only a nameserver or nameservers requests a basic check on whether a nameserver process is running on the supplied nameserver(s).
Providing both a zone and (a) nameserver(s) requests the full suite of checks to be performed on both the nameserver(s), and the zone as served by those nameserver(s).

Nameserver and zone

Name of Zone

(Either or both)