smtp.nitro.news has no NS records.
NS records for this zone are defined at nitro.news.
NS records for this zone are defined at nitro.news.
Question and response
Question
dig smtp.nitro.news. NS
Answer
The response has no answer records.
Authority
nitro.news. 1800 SOA gemma.ns.cloudflare.com. dns.cloudflare.com. 2398118824 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0