mail.ingeoteh.ru has no NS records.
NS records for this zone are defined at ingeoteh.ru.
NS records for this zone are defined at ingeoteh.ru.
Question and response
Question
dig mail.ingeoteh.ru. NS
Answer
The response has no answer records.
Authority
ingeoteh.ru. 3600 SOA avmailer.ru. root.example.com. 2021032554 3600 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0