realty.obcity.ru has no NS records.
NS records for this zone are defined at obcity.ru.
NS records for this zone are defined at obcity.ru.
Question and response
Question
dig obcity.p.reforum.ru. NS
Answer
The response has no answer records.
Authority
reforum.ru. 900 SOA dns1.yandex.net. dns-hosting.yandex.ru. 29 900 90 86400 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0