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

Results forspf.hostfactory.ch

Resolver

Location

A

Name	TTL	Value
spf.hostfactory.ch	180	v=spf1 ip4:185.117.170.1 ip4:185.117.170.2 ip4:217.150.252.154 ip4:217.150.252.155 ip4:185.16.174.135 ip4:185.16.174.139 ip4:185.117.169.5 ip4:185.117.168.45 ip4:185.117.169.100 ip4:185.117.168.143 ip4:185.117.168.144 ip4:185.117.168.141 ip4:185.117.168.142 ip4:185.117.170.5 ip4:185.117.170.6 ip4:185.117.170.3 ip4:185.117.170.4 ip4:185.117.170.7 ip4:185.117.170.8 ip4:185.117.168.252 ip4:185.117.168.253 -all