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

Results forspf-331.mailgrid.net.br

Resolver

Location

TXT

Name	TTL	Value
spf-331.mailgrid.net.br	300	v=spf1 ip4:149.56.44.130 ip4:192.95.19.201 ip4:149.56.38.1 ip4:66.70.238.112 ip4:144.217.103.247 ip4:167.114.206.238 ip4:198.50.157.226 ip4:192.95.19.230 ip4:192.95.19.250 ip4:144.217.103.87 ip4:144.217.103.81 ip4:147.135.64.215 ip4:51.79.35.138 -all