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

Results forcdn.wp.one8.app

Resolver

Location

A

Name	TTL	Value
cdn.wp.one8.app	60	18.160.41.15AWS CloudFront (GLOBAL) / Amazon.com, Inc.
cdn.wp.one8.app	60	18.160.41.41AWS CloudFront (GLOBAL) / Amazon.com, Inc.
cdn.wp.one8.app	60	18.160.41.56AWS CloudFront (GLOBAL) / Amazon.com, Inc.
cdn.wp.one8.app	60	18.160.41.72AWS CloudFront (GLOBAL) / Amazon.com, Inc.