postman.fornex.ninja has no NS records.
NS records for this zone are defined at fornex.ninja.
NS records for this zone are defined at fornex.ninja.
Question and response
Question
dig postman.fornex.ninja. NS
Answer
The response has no answer records.
Authority
fornex.ninja. 1800 SOA celeste.ns.cloudflare.com. dns.cloudflare.com. 2399160245 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0