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

Results forwww.localhost.testerset.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-06-09T01:20:08.481	2025-06-09T00:21:37	2025-09-07T00:21:36	www.localhost.testerset.com	www.localhost.testerset.com	C=US, O=Let's Encrypt, CN=R10
2025-06-09T01:20:08.262	2025-06-09T00:21:37	2025-09-07T00:21:36	www.localhost.testerset.com	www.localhost.testerset.com	C=US, O=Let's Encrypt, CN=R10
2025-03-15T21:33:43.634	2025-03-15T20:35:13	2025-06-13T20:35:12	www.localhost.testerset.com	www.localhost.testerset.com	C=US, O=Let's Encrypt, CN=R10
2025-03-15T21:33:43.315	2025-03-15T20:35:13	2025-06-13T20:35:12	www.localhost.testerset.com	www.localhost.testerset.com	C=US, O=Let's Encrypt, CN=R10
2024-12-21T07:44:35.563	2024-12-21T06:46:04	2025-03-21T06:46:03	www.localhost.testerset.com	www.localhost.testerset.com	C=US, O=Let's Encrypt, CN=R10
2024-12-21T07:44:35.284	2024-12-21T06:46:04	2025-03-21T06:46:03	www.localhost.testerset.com	www.localhost.testerset.com	C=US, O=Let's Encrypt, CN=R10