gpu.kemsu.ru has no NS records.
NS records for this zone are defined at kemsu.ru.
NS records for this zone are defined at kemsu.ru.
Question and response
Question
dig gpu.kemsu.ru. NS
Answer
The response has no answer records.
Authority
kemsu.ru. 86400 SOA ns.kemsu.ru. postmaster.kemsu.ru. 2026021901 10800 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0