Domains with DNS TXT v=spf1 +a +mx +ip4:185.137.220.8 +include:spf.protection.outlook.com include:relay.mailchannels.net -all

There are 86 domains that have DNS TXT set to v=spf1 +a +mx +ip4:185.137.220.8 +include:spf.protection.outlook.com include:relay.mailchannels.net -all. The top 50 records ordered by domain rank are listed below.