imail.unwiredbb.net has no NS records.
NS records for this zone are defined at unwiredbb.net.
NS records for this zone are defined at unwiredbb.net.
Question and response
Question
dig imail.unwiredbb.net. NS
Answer
The response has no answer records.
Authority
unwiredbb.net. 900 SOA ns1.unwiredbb.net. ipadmin.unwiredbb.net. 2019092125 900 900 604800 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0