smtp.bitnet.pro has no NS records.
NS records for this zone are defined at bitnet.pro.
NS records for this zone are defined at bitnet.pro.
Question and response
Question
dig smtp.bitnet.pro. NS
Answer
The response has no answer records.
Authority
bitnet.pro. 1800 SOA jaziel.ns.cloudflare.com. dns.cloudflare.com. 2397323547 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0