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

Results forms.auth.enterprise.commitchell.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2024-06-07T10:41:02.885	2024-06-07T09:41:02	2024-09-05T09:41:01	ms.auth.enterprise.commitchell.com	ms.auth.enterprise.commitchell.com	C=US, O=Let's Encrypt, CN=R11
2024-06-07T10:41:02.526	2024-06-07T09:41:02	2024-09-05T09:41:01	ms.auth.enterprise.commitchell.com	ms.auth.enterprise.commitchell.com	C=US, O=Let's Encrypt, CN=R11
2024-04-07T15:15:53.363	2024-04-07T14:15:50	2024-07-06T14:15:49	ms.auth.enterprise.commitchell.com	ms.auth.enterprise.commitchell.com	C=US, O=Let's Encrypt, CN=R3
2024-04-07T15:15:51.122	2024-04-07T14:15:50	2024-07-06T14:15:49	ms.auth.enterprise.commitchell.com	ms.auth.enterprise.commitchell.com	C=US, O=Let's Encrypt, CN=R3