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

Results for*.rubydee.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-01-17T18:16:43.171	2023-01-17T17:16:42	2023-04-17T17:16:41	rubydee.com	*.rubydee.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T18:16:43.171	2023-01-17T17:16:42	2023-04-17T17:16:41	rubydee.com	*.rubydee.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T18:16:42.911	2023-01-17T17:16:42	2023-04-17T17:16:41	rubydee.com	*.rubydee.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T18:16:42.911	2023-01-17T17:16:42	2023-04-17T17:16:41	rubydee.com	*.rubydee.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T16:16:23.149	2022-11-18T15:16:22	2023-02-16T15:16:21	rubydee.com	*.rubydee.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T16:16:23.149	2022-11-18T15:16:22	2023-02-16T15:16:21	rubydee.com	*.rubydee.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T16:16:23.001	2022-11-18T15:16:22	2023-02-16T15:16:21	rubydee.com	*.rubydee.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T16:16:23.001	2022-11-18T15:16:22	2023-02-16T15:16:21	rubydee.com	*.rubydee.com	C=US, O=Let's Encrypt, CN=R3