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

Results fordev2.aa87.org

Resolver

Location

A

Name	TTL	Value
dev2.aa87.org	300	104.254.183.23Astral internet Inc / Astral internet Inc.

Name	TTL	Value
dev2.aa87.org	14400	v=spf1 ip4:104.254.183.23 +a +mx +ip4:64.34.156.166 include:spf.web-dns1.com ~all