undefined.hostname.localhost NS records

NS Authoritative DNS server
1d
undefined.hostname.localhost has no NS records.
NS records for this zone are defined at localhost..
NS records for localhost.

Question and response

Question

dig undefined.hostname.localhost. NS

Answer

The response has no answer records.

Authority

. 86400 SOA a.root-servers.net. nstld.verisign-grs.com. 2026022101 1800 900 604800 86400

Additional

. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0