Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:mailgun.org include:_spf.google.com -all

There are 23 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:mailgun.org include:_spf.google.com -all. The top 23 records ordered by domain rank are listed below.