Domains with DNS TXT v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ~all

There are 1,978 domains that have DNS TXT set to v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ~all. The top 50 records ordered by domain rank are listed below.