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

Results forhostmaster.slept.net

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-11-13T14:52:32.442	2025-11-13T13:54:02	2026-02-11T13:54:01	hostmaster.slept.net	hostmaster.slept.net	C=US, O=Let's Encrypt, CN=R13
2025-11-13T14:52:32.16	2025-11-13T13:54:02	2026-02-11T13:54:01	hostmaster.slept.net	hostmaster.slept.net	C=US, O=Let's Encrypt, CN=R13
2023-01-17T17:10:36.249	2023-01-17T16:10:35	2023-04-17T16:10:34	slept.net	*.slept.net	C=US, O=Let's Encrypt, CN=R3
2023-01-17T17:10:35.53	2023-01-17T16:10:35	2023-04-17T16:10:34	slept.net	*.slept.net	C=US, O=Let's Encrypt, CN=R3
2022-11-18T15:10:41.752	2022-11-18T14:10:41	2023-02-16T14:10:40	slept.net	*.slept.net	C=US, O=Let's Encrypt, CN=R3
2022-11-18T15:10:41.391	2022-11-18T14:10:41	2023-02-16T14:10:40	slept.net	*.slept.net	C=US, O=Let's Encrypt, CN=R3