25575472.spf04.hubspotemail.net has no NS records.
NS records for this zone are defined at spf04.hubspotemail.net.
NS records for this zone are defined at spf04.hubspotemail.net.
Question and response
Question
dig 25575472.spf04.hubspotemail.net. NS
Answer
The response has no answer records.
Authority
spf04.hubspotemail.net. 180 SOA ns10.digicertdns.com. dns.digicertdns.com. 2009010105 43200 3600 1209600 180
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0