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

Results forwww.dev.learnaboutthc.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-09-21T16:48:46.957	2025-09-21T15:50:14	2025-12-20T15:50:13	www.dev.learnaboutthc.com	www.dev.learnaboutthc.com	C=US, O=Let's Encrypt, CN=R12
2025-09-21T16:48:44.721	2025-09-21T15:50:14	2025-12-20T15:50:13	www.dev.learnaboutthc.com	www.dev.learnaboutthc.com	C=US, O=Let's Encrypt, CN=R12
2025-05-23T05:26:20.639	2025-05-23T04:27:50	2025-08-21T04:27:49	www.dev.learnaboutthc.com	www.dev.learnaboutthc.com	C=US, O=Let's Encrypt, CN=R10
2025-05-23T05:26:20.482	2025-05-23T04:27:50	2025-08-21T04:27:49	www.dev.learnaboutthc.com	www.dev.learnaboutthc.com	C=US, O=Let's Encrypt, CN=R10