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

Results for_spf.loop28.com

Resolver

Location

TXT

Name	TTL	Value
_spf.loop28.com	300	v=spf1 ip4:208.38.139.192/27 ip4:208.38.139.160/28 ip4:173.241.200.0/27 ip4:173.241.205.224/27 ip4:47.206.13.233 ip4:97.76.110.210 ip4:24.192.232.5 ip4:65.61.59.0/24 ip4:65.61.61.1/24 ~all