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

Results forspf.virtualhosts.de

Resolver

Location

TXT

Name	TTL	Value
spf.virtualhosts.de	1000	v=spf1 a:mailout01.virtualhosts.de ip4:80.83.116.49 ip4:80.83.113.70 ip4:130.255.184.85 ip4:130.255.79.134 ip4:130.255.79.132 i p4:80.153.3.237 ip4:130.255.76.6 ip4:46.20.47.98 ip4:130.255.79.66 ip4:130.255.79.80 ip4:80.83.116.117 ip4:130.255.79.224 ip4:1 30.255.79.18 ip4:80.83.116.47