Domains with DNS TXT v=spf1 include:spf.protection.outlook.com ip4:176.221.55.134 -all

There is 1 domain that have DNS TXT set to v=spf1 include:spf.protection.outlook.com ip4:176.221.55.134 -all.

Top Domains with TXT set to v=spf1 include:spf.protection.outlook.com ip4:176.221.55.134 -all