Domains with DNS TXT v=spf1 ip4:66.225.221.66 +mx +a +ip4:198.59.144.172 +include:relay.mailchannels.net ~all

There is 1 domain that have DNS TXT set to v=spf1 ip4:66.225.221.66 +mx +a +ip4:198.59.144.172 +include:relay.mailchannels.net ~all.

Top Domains with TXT set to v=spf1 ip4:66.225.221.66 +mx +a +ip4:198.59.144.172 +include:relay.mailchannels.net ~all