www.tel.ru has no NS records.
NS records for this zone are defined at tel.ru.
NS records for this zone are defined at tel.ru.
Question and response
Question
dig www.tel.ru. NS
Answer
The response has no answer records.
Authority
tel.ru. 3600 SOA ns.tel.ru. noc.tel.ru. 2026031503 21600 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0