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

Results for*.copper.expert

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-06-25T18:24:20.262	2023-06-25T17:24:20	2023-09-23T17:24:19	copper.expert	*.copper.expert	C=US, O=Let's Encrypt, CN=R3
2023-06-25T18:24:20.262	2023-06-25T17:24:20	2023-09-23T17:24:19	copper.expert	*.copper.expert	C=US, O=Let's Encrypt, CN=R3
2023-06-25T18:24:20.151	2023-06-25T17:24:20	2023-09-23T17:24:19	copper.expert	*.copper.expert	C=US, O=Let's Encrypt, CN=R3
2023-06-25T18:24:20.151	2023-06-25T17:24:20	2023-09-23T17:24:19	copper.expert	*.copper.expert	C=US, O=Let's Encrypt, CN=R3
2022-10-01T16:47:59.385	2022-10-01T15:47:58	2022-12-30T15:47:57	*.copper.expert	*.copper.expert	C=US, O=Google Trust Services LLC, CN=GTS CA 1P5
2022-10-01T16:47:59.385	2022-10-01T15:47:58	2022-12-30T15:47:57	*.copper.expert	*.copper.expert	C=US, O=Google Trust Services LLC, CN=GTS CA 1P5