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

Results forspf-b.sk.com

Resolver

Location

TXT

Name	TTL	Value
spf-b.sk.com	300	v=spf1 ip4:211.58.57.0/24 ip4:203.226.253.11 ip4:124.66.187.61 ip4:166.125.252.79 ip4:166.125.252.85 ip4:166.125.252.90 ip4:166.125.252.92 ip4:15.165.108.235 ip4:49.50.54.96/31 ip4:218.90.175.175 ip4:218.90.175.176 ip4:218.232.109.11 ip4:3.38.81.22 ~all