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

Results forhostmaster.spatialmirror.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2024-12-12T03:06:10.72	2024-12-12T02:07:40	2025-03-12T02:07:39	hostmaster.spatialmirror.com	hostmaster.spatialmirror.com	C=US, O=Let's Encrypt, CN=R10
2024-12-12T03:06:10.303	2024-12-12T02:07:40	2025-03-12T02:07:39	hostmaster.spatialmirror.com	hostmaster.spatialmirror.com	C=US, O=Let's Encrypt, CN=R10
2023-12-01T15:44:10.407	2023-12-01T14:44:09	2024-02-29T14:44:08	hostmaster.spatialmirror.com	hostmaster.spatialmirror.com	C=US, O=Let's Encrypt, CN=R3
2023-12-01T15:44:09.894	2023-12-01T14:44:09	2024-02-29T14:44:08	hostmaster.spatialmirror.com	hostmaster.spatialmirror.com	C=US, O=Let's Encrypt, CN=R3