ru.nwgtm.ru has no NS records.
NS records for this zone are defined at nwgtm.ru.
NS records for this zone are defined at nwgtm.ru.
Question and response
Question
dig ru.nwgtm.ru. NS
Answer
The response has no answer records.
Authority
nwgtm.ru. 1800 SOA jillian.ns.cloudflare.com. dns.cloudflare.com. 2398793238 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0