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

Results foras.virginia.edu

Resolver

Location

A

Name	TTL	Value
as.virginia.edu	3600	23.185.0.2Pantheon / Fastly, Inc.

Name	TTL	Value
as.virginia.edu	3600	nom.virginia.edu
as.virginia.edu	3600	uvaarpa.virginia.edu

Name	TTL	Value
as.virginia.edu	3600	nom.virginia.edu hostmaster.virginia.edu 2016044217 10800 3600 2419200 900

Name	TTL	Value
as.virginia.edu	3600	v=spf1 -all