Domains with DNS TXT v=spf1 ip4:142.0.168.53 ip4:142.0.168.54 ip4:142.0.168.55 include:spf.protection.outlook.com include:_netblocks.mimecast.com ~all

There are 21 domains that have DNS TXT set to v=spf1 ip4:142.0.168.53 ip4:142.0.168.54 ip4:142.0.168.55 include:spf.protection.outlook.com include:_netblocks.mimecast.com ~all. The top 21 records ordered by domain rank are listed below.