mail.NETORN.RU has no NS records.
NS records for this zone are defined at NETORN.RU.
NS records for this zone are defined at NETORN.RU.
Question and response
Question
dig mail.NETORN.RU. NS
Answer
The response has no answer records.
Authority
NETORN.RU. 600 SOA ns1.netorn.net. admin.NETORN.RU. 2025060217 600 900 1800 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0