Domains with DNS TXT v=spf1 +a +mx +ip4:156.38.175.66 +include:spf.protection.outlook.com ~all

There are 29 domains that have DNS TXT set to v=spf1 +a +mx +ip4:156.38.175.66 +include:spf.protection.outlook.com ~all. The top 29 records ordered by domain rank are listed below.