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

Results forspf.webspacecontrol.com

Resolver

Location

TXT

Name	TTL	Value
spf.webspacecontrol.com	300	v=spf1 ip4:185.33.52.0/22 ip6:2a00:c760:83:def:aced::/80 ip6:2a00:c760:80:d07:2011:ffff:b921:341a/128 ip4:84.2.35.120/29 ip4:84.2.35.128/26 ip4:80.249.163.128/26 ip4:185.224.44.51 ip6:2a14:6940:800:d07:2011:0:7e2c:ca0f/128