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

Results forspf.octopuce.fr

Resolver

Location

TXT

Name	TTL	Value
spf.octopuce.fr	3600	v=spf1 ip4:91.194.60.0/23 ip4:193.56.58.0/24 ip4:185.34.32.0/24 ip4:185.34.34.0/23 ip4:185.215.168.0/22 ip6:2001:67c:288::/48 ip6:2a00:99a0:f000::/48 ip4:217.24.80.0/20 ip6:2001:1b78::/32 ip4:5.1.98.128/28 ?all