mx1.pdlsk.cifra1.ru has no NS records.
NS records for this zone are defined at pdlsk.cifra1.ru.
NS records for this zone are defined at pdlsk.cifra1.ru.
Question and response
Question
dig mx1.pdlsk.cifra1.ru. NS
Answer
The response has no answer records.
Authority
pdlsk.cifra1.ru. 600 SOA ns1.almatel.ru. noc.almatel.ru. 2019090600 7200 3600 3600000 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0