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

Results for*.91004.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-01-17T17:24:42.184	2023-01-17T16:24:42	2023-04-17T16:24:41	91004.com	*.91004.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T17:24:42.184	2023-01-17T16:24:42	2023-04-17T16:24:41	91004.com	*.91004.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T17:24:42.079	2023-01-17T16:24:42	2023-04-17T16:24:41	91004.com	*.91004.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T17:24:42.079	2023-01-17T16:24:42	2023-04-17T16:24:41	91004.com	*.91004.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T15:26:03.575	2022-11-18T14:26:02	2023-02-16T14:26:01	91004.com	*.91004.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T15:26:03.575	2022-11-18T14:26:02	2023-02-16T14:26:01	91004.com	*.91004.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T15:26:03.039	2022-11-18T14:26:02	2023-02-16T14:26:01	91004.com	*.91004.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T15:26:03.039	2022-11-18T14:26:02	2023-02-16T14:26:01	91004.com	*.91004.com	C=US, O=Let's Encrypt, CN=R3