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

Results forhostmaster.virtualextension.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-11-17T07:20:49.667	2025-11-17T06:22:19	2026-02-15T06:22:18	hostmaster.virtualextension.com	hostmaster.virtualextension.com	C=US, O=Let's Encrypt, CN=R13
2025-11-17T07:20:49.399	2025-11-17T06:22:19	2026-02-15T06:22:18	hostmaster.virtualextension.com	hostmaster.virtualextension.com	C=US, O=Let's Encrypt, CN=R13
2023-01-17T17:06:49.132	2023-01-17T16:06:48	2023-04-17T16:06:47	virtualextension.com	*.virtualextension.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T17:06:48.912	2023-01-17T16:06:48	2023-04-17T16:06:47	virtualextension.com	*.virtualextension.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T15:06:39.199	2022-11-18T14:06:38	2023-02-16T14:06:37	virtualextension.com	*.virtualextension.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T15:06:38.853	2022-11-18T14:06:38	2023-02-16T14:06:37	virtualextension.com	*.virtualextension.com	C=US, O=Let's Encrypt, CN=R3