ns02.everbridgedns.net has no NS records.
NS records for this zone are defined at everbridgedns.net.
NS records for this zone are defined at everbridgedns.net.
Question and response
Question
dig ns02.everbridgedns.net. NS
Answer
The response has no answer records.
Authority
everbridgedns.net. 3600 SOA dns1.p07.nsone.net. hostmaster.nsone.net. 1603140796 43200 7200 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0