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

Results for_spf.oniaas.io

Resolver

Location

TXT

Name	TTL	Value
_spf.oniaas.io	300	v=spf1 ip4:208.79.216.67 ip4:190.180.144.58 ip4:200.69.16.221 ip4:194.146.104.236 ip6:2605:6f07:1234:202:1::2a5 ip6:2606:bd00:1234:202:1::12b ip6:2604:9780:1234:202:1::3cb ip6:2605:6f00:1234:208:1::1d ip4:208.79.216.92 ip6:2605:6f00:1234:208:1::30f includ e:relay.mailchannels.net -all