ns2.srvdns.RU has no NS records.
NS records for this zone are defined at srvdns.RU.
NS records for this zone are defined at srvdns.RU.
Question and response
Question
dig ns2.srvdns.RU. NS
Answer
The response has no answer records.
Authority
srvdns.ru. 30 SOA ns1.srvdns.ru. hostmaster.servers.ru. 2025100802 60 30 604800 30
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0