It can be anything! An apex, subdomain, or even a URL.

Results forfdspfaus.freshemail.io

Resolver

Location

TXT

Name	TTL	Value
fdspfaus.freshemail.io	300	v=spf1 ip4:3.25.47.0/29 ip4:52.62.151.40 ip4:13.237.4.248 ip4:13.211.56.237 ip4:3.26.58.204/30 ip4:54.252.22.127 ip4:54.206.207.130 ip4:3.26.82.216/29 ip4:3.26.88.88/29 ip4:3.26.88.244/30 ip4:3.107.43.16/28 ip4:3.106.23.176/29 ~all