Every nameserver is authoritative
ns.authoritative
A server listed in the delegation that does not consider itself authoritative is a "lame delegation": it answers, but with nothing useful.
A longer write-up of this check has not been published yet. The report itself shows the raw evidence behind every result, which is usually the fastest way to see what was measured.
Run this check on a domain
Every nameserver is authoritative is one of 49 checks in every report, alongside delegation, mail authentication, TLS and registration.
Also in Nameservers
- At least two nameservers
- Nameservers are independent of each other
- Nameserver hostnames are valid
- IPv6 reachability
- Nameservers are not open resolvers
- Nameservers agree on the SOA serial
- Nameservers agree on the NS set
- Nameservers respond over TCP
- Nameservers respond over UDP
- Zone transfers are not open to the world