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

Results forstaging.networkpurchase.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2024-07-21T11:52:05.118	2024-07-21T10:52:04	2024-10-19T10:52:03	www.staging.networkpurchase.com	www.staging.networkpurchase.com	C=US, O=Let's Encrypt, CN=R10
2024-07-21T11:52:04.943	2024-07-21T10:52:04	2024-10-19T10:52:03	www.staging.networkpurchase.com	www.staging.networkpurchase.com	C=US, O=Let's Encrypt, CN=R10
2024-07-21T10:21:44.005	2024-07-21T09:21:43	2024-10-19T09:21:42	staging.networkpurchase.com	staging.networkpurchase.com	C=US, O=Let's Encrypt, CN=R11
2024-07-21T10:21:43.744	2024-07-21T09:21:43	2024-10-19T09:21:42	staging.networkpurchase.com	staging.networkpurchase.com	C=US, O=Let's Encrypt, CN=R11