send.mx.cdnetworks.com has no NS records.
NS records for this zone are defined at cdnetworks.com.
NS records for this zone are defined at cdnetworks.com.
Question and response
Question
dig send.mx.cdnetworks.com. NS
Answer
The response has no answer records.
Authority
cdnetworks.com. 60 SOA ns1.cdnetdns.net. dnsadmin.cdnetworks.com. 2023070602 7200 600 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0