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

Results for*.alpinebay.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-04-27T01:13:50.495	2019-04-27T00:13:50	2019-07-26T00:13:50	*.alpinebay.com	*.alpinebay.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-04-27T01:13:50.495	2019-04-27T00:13:50	2019-07-26T00:13:50	*.alpinebay.com	*.alpinebay.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-04-27T01:13:50.239	2019-04-27T00:13:50	2019-07-26T00:13:50	*.alpinebay.com	*.alpinebay.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-04-27T01:13:50.239	2019-04-27T00:13:50	2019-07-26T00:13:50	*.alpinebay.com	*.alpinebay.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-04-26T22:51:31.319	2019-04-26T21:51:30	2019-07-25T21:51:30	*.alpinebay.com	*.alpinebay.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-04-26T22:51:31.319	2019-04-26T21:51:30	2019-07-25T21:51:30	*.alpinebay.com	*.alpinebay.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-04-26T22:51:30.445	2019-04-26T21:51:30	2019-07-25T21:51:30	*.alpinebay.com	*.alpinebay.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-04-26T22:51:30.445	2019-04-26T21:51:30	2019-07-25T21:51:30	*.alpinebay.com	*.alpinebay.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3