Domains with DNS TXT v=spf1 a include:spf.protection.outlook.com include:_spf.psm.knowbe4.com ip4:206.108.215.42 ip4:206.108.215.43 ip4:65.55.251.16 -all
There is 1 domain that have DNS TXT set to v=spf1 a include:spf.protection.outlook.com include:_spf.psm.knowbe4.com ip4:206.108.215.42 ip4:206.108.215.43 ip4:65.55.251.16 -all.