d.registrydns.co has no NS records.
NS records for this zone are defined at registrydns.co.
NS records for this zone are defined at registrydns.co.
Question and response
Question
dig d.registrydns.co. NS
Answer
The response has no answer records.
Authority
registrydns.co. 900 SOA ns0.centralnic.net. hostmaster.centralnic.net. 2025092216 900 1800 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0