cdn-cname.pendo.io has no NS records.
NS records for this zone are defined at pendo.io.
NS records for this zone are defined at pendo.io.
Question and response
Question
dig 51.138.111.34.bc.googleusercontent.com. NS
Answer
The response has no answer records.
Authority
googleusercontent.com. 60 SOA ns1.google.com. dns-admin.google.com. 887603846 900 900 1800 60
Additional
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0