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

Results forspf-sk.sk.com

Resolver

Location

TXT

Name	TTL	Value
spf-sk.sk.com	300	v=spf1 ip4:210.211.69.48/29 ip4:210.211.67.48/29 ip4:210.211.69.141 ip4:210.211.69.151 ip4:124.66.187.51 ip4:124.66.187.52 ip4:166.125.252.0/24 ip4:124.66.183.56/31 ip4:39.117.196.245 ip4:121.78.55.205 ip4:206.219.32.47 ip4:206.219.32.48 ~all