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

Results for_spf4.hetzner.com

Resolver

Location

TXT

Name	TTL	Value
_spf4.hetzner.com	7200	v=spf1 +ip4:213.133.106.242 +ip4:213.133.106.252 +ip4:78.46.0.100 +ip4:213.133.105.184 +ip4:213.133.106.108 +ip4:213.133.106.33 +ip4:213.133.99.103 +ip4:78.46.10.45 +ip4:78.46.10.230 +ip4:78.46.1.93 +ip4:85.10.215.232 +ip4:213.133.104.100 +ip4:213.133.104.190 +ip4:88.198.220.171 +ip4:213.133.107.241 +ip4:78.46.167.60 +ip4:213.95.79.236 +ip4:213.95.79.238 +ip4:213.133.104.248 -all