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

Results forapp.whooosreading.org

Resolver

Location

A

Name	TTL	Value
app.whooosreading.org	60	3.171.100.4AWS CloudFront (GLOBAL) / Amazon.com, Inc.
app.whooosreading.org	60	3.171.100.13AWS CloudFront (GLOBAL) / Amazon.com, Inc.
app.whooosreading.org	60	3.171.100.102AWS CloudFront (GLOBAL) / Amazon.com, Inc.
app.whooosreading.org	60	3.171.100.125AWS CloudFront (GLOBAL) / Amazon.com, Inc.