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

Results for*.aptimum.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-01-17T20:06:55.911	2023-01-17T19:06:55	2023-04-17T19:06:54	aptimum.com	*.aptimum.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T20:06:55.911	2023-01-17T19:06:55	2023-04-17T19:06:54	aptimum.com	*.aptimum.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T20:06:55.82	2023-01-17T19:06:55	2023-04-17T19:06:54	aptimum.com	*.aptimum.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T20:06:55.82	2023-01-17T19:06:55	2023-04-17T19:06:54	aptimum.com	*.aptimum.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T18:06:45.998	2022-11-18T17:06:45	2023-02-16T17:06:44	aptimum.com	*.aptimum.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T18:06:45.998	2022-11-18T17:06:45	2023-02-16T17:06:44	aptimum.com	*.aptimum.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T18:06:45.787	2022-11-18T17:06:45	2023-02-16T17:06:44	aptimum.com	*.aptimum.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T18:06:45.787	2022-11-18T17:06:45	2023-02-16T17:06:44	aptimum.com	*.aptimum.com	C=US, O=Let's Encrypt, CN=R3