219987.spf02.hubspotemail.net has no NS records.
NS records for this zone are defined at spf02.hubspotemail.net.
NS records for this zone are defined at spf02.hubspotemail.net.
Question and response
Question
dig 219987.spf02.hubspotemail.net. NS
Answer
The response has no answer records.
Authority
spf02.hubspotemail.net. 180 SOA ns10.digicertdns.com. dns.digicertdns.com. 2009010114 43200 3600 1209600 180
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0