srv-91-224-92-65.serveroffer.net has no NS records.
NS records for this zone are defined at serveroffer.net.
NS records for this zone are defined at serveroffer.net.
Question and response
Question
dig srv-91-224-92-65.serveroffer.net. NS
Answer
The response has no answer records.
Authority
serveroffer.net. 14400 SOA ns1.serveroffer.net. hostmaster.serveroffer.net. 2019041000 14400 3600 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0