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

Results forhostmaster.portablelocker.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-11-09T19:48:30.541	2025-11-09T18:50:00	2026-02-07T18:49:59	hostmaster.portablelocker.com	hostmaster.portablelocker.com	C=US, O=Let's Encrypt, CN=R12
2025-11-09T19:48:30.292	2025-11-09T18:50:00	2026-02-07T18:49:59	hostmaster.portablelocker.com	hostmaster.portablelocker.com	C=US, O=Let's Encrypt, CN=R12
2023-01-17T16:09:33.326	2023-01-17T15:09:32	2023-04-17T15:09:31	portablelocker.com	*.portablelocker.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T16:09:32.726	2023-01-17T15:09:32	2023-04-17T15:09:31	portablelocker.com	*.portablelocker.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T14:08:57.55	2022-11-18T13:08:57	2023-02-16T13:08:56	portablelocker.com	*.portablelocker.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T14:08:57.358	2022-11-18T13:08:57	2023-02-16T13:08:56	portablelocker.com	*.portablelocker.com	C=US, O=Let's Encrypt, CN=R3