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

Results for*.hfbu.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-03-07T01:43:33.504	2023-03-07T00:43:33	2023-06-05T00:43:32	hfbu.com	*.hfbu.com	C=US, O=Let's Encrypt, CN=R3
2023-03-07T01:43:33.504	2023-03-07T00:43:33	2023-06-05T00:43:32	hfbu.com	*.hfbu.com	C=US, O=Let's Encrypt, CN=R3
2023-03-07T01:43:33.315	2023-03-07T00:43:33	2023-06-05T00:43:32	hfbu.com	*.hfbu.com	C=US, O=Let's Encrypt, CN=R3
2023-03-07T01:43:33.315	2023-03-07T00:43:33	2023-06-05T00:43:32	hfbu.com	*.hfbu.com	C=US, O=Let's Encrypt, CN=R3
2020-08-22T18:33:00.61	2020-08-22T17:33:00	2020-11-20T17:33:00	hfbu.com	*.hfbu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-08-22T18:33:00.61	2020-08-22T17:33:00	2020-11-20T17:33:00	hfbu.com	*.hfbu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-08-22T18:33:00.355	2020-08-22T17:33:00	2020-11-20T17:33:00	hfbu.com	*.hfbu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-08-22T18:33:00.355	2020-08-22T17:33:00	2020-11-20T17:33:00	hfbu.com	*.hfbu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3