Domains with DNS TXT v=spf1 +a +mx +ip4:139.99.138.251 +include:relay.mailchannels.net ~all

There is 1 domain that have DNS TXT set to v=spf1 +a +mx +ip4:139.99.138.251 +include:relay.mailchannels.net ~all.

Top Domains with TXT set to v=spf1 +a +mx +ip4:139.99.138.251 +include:relay.mailchannels.net ~all