cd.b2match.io has no NS records.
NS records for this zone are defined at b2match.io.
NS records for this zone are defined at b2match.io.
Question and response
Question
dig cd.b2match.io. NS
Answer
The response has no answer records.
Authority
b2match.io. 300 SOA ns-cloud-e1.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300
Additional
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0