Domains with DNS TXT v=spf1 +mx +a +ip4:50.87.144.191 +include:cloudfilter.net -all

There are 53 domains that have DNS TXT set to v=spf1 +mx +a +ip4:50.87.144.191 +include:cloudfilter.net -all. The top 50 records ordered by domain rank are listed below.