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

Results forhostmaster.studentsecurity.org

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-06-30T05:38:13.57	2025-06-30T04:39:43	2025-09-28T04:39:42	www.hostmaster.studentsecurity.org	www.hostmaster.studentsecurity.org	C=US, O=Let's Encrypt, CN=R11
2025-06-30T05:38:13.239	2025-06-30T04:39:43	2025-09-28T04:39:42	www.hostmaster.studentsecurity.org	www.hostmaster.studentsecurity.org	C=US, O=Let's Encrypt, CN=R11
2025-06-29T16:43:05.852	2025-06-29T15:44:35	2025-09-27T15:44:34	hostmaster.studentsecurity.org	hostmaster.studentsecurity.org	C=US, O=Let's Encrypt, CN=R11
2025-06-29T16:43:05.579	2025-06-29T15:44:35	2025-09-27T15:44:34	hostmaster.studentsecurity.org	hostmaster.studentsecurity.org	C=US, O=Let's Encrypt, CN=R11