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

Results forhostmaster.navigationgps.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-01-16T02:19:38.512	2025-01-16T01:21:08	2025-04-16T01:21:07	www.hostmaster.navigationgps.com	www.hostmaster.navigationgps.com	C=US, O=Let's Encrypt, CN=R11
2025-01-16T02:19:38.284	2025-01-16T01:21:08	2025-04-16T01:21:07	www.hostmaster.navigationgps.com	www.hostmaster.navigationgps.com	C=US, O=Let's Encrypt, CN=R11
2025-01-15T09:32:44.89	2025-01-15T08:34:14	2025-04-15T08:34:13	hostmaster.navigationgps.com	hostmaster.navigationgps.com	C=US, O=Let's Encrypt, CN=R11
2025-01-15T09:32:44.667	2025-01-15T08:34:14	2025-04-15T08:34:13	hostmaster.navigationgps.com	hostmaster.navigationgps.com	C=US, O=Let's Encrypt, CN=R11