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

Results forspf.forwardemail.net

Resolver

Location

TXT

Name	TTL	Value
spf.forwardemail.net	300	v=spf1 ip4:121.127.44.56 ip6:2a02:6ea0:d71e::2 ip4:121.127.44.59 ip6:2a02:6ea0:d71e::1 ip4:121.127.44.73 ip6:2a02:6ea0:d71e::9 ip4:138.197.213.185 ip4:104.248.224.170 ip6:2604:a880:2:d0::306:1 ip6:2604:a880:400:d1::cd:9001 ip6:2001:19f0:ac01:d3c:5400:4ff :fe72:47c4 -all