Domains with DNS TXT v=spf1 mx a include:spf.protection.outlook.com include:_spf.google.com include:_spf.firebasemail.com -all
There is 1 domain that have DNS TXT set to v=spf1 mx a include:spf.protection.outlook.com include:_spf.google.com include:_spf.firebasemail.com -all.