ppi.rcpod.ru has no NS records.
NS records for this zone are defined at rcpod.ru.
NS records for this zone are defined at rcpod.ru.
Question and response
Question
dig ppi.rcpod.ru. NS
Answer
The response has no answer records.
Authority
rcpod.ru. 3600 SOA pcs-isp-1.pc-net.ru. service.pc-net.ru. 2021032838 3600 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0