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

Results for*.birarama.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-12-25T22:42:16.929	2019-12-25T21:42:16	2020-03-24T21:42:16	langtou.com	*.birarama.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-12-25T22:42:16.929	2019-12-25T21:42:16	2020-03-24T21:42:16	langtou.com	*.birarama.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-12-25T22:42:16.752	2019-12-25T21:42:16	2020-03-24T21:42:16	langtou.com	*.birarama.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-12-25T22:42:16.752	2019-12-25T21:42:16	2020-03-24T21:42:16	langtou.com	*.birarama.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-10-04T15:10:32.276	2019-10-04T14:10:30	2020-01-02T14:10:30	kritnu.com	*.birarama.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-10-04T15:10:32.276	2019-10-04T14:10:30	2020-01-02T14:10:30	kritnu.com	*.birarama.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-10-04T15:10:31.06	2019-10-04T14:10:30	2020-01-02T14:10:30	kritnu.com	*.birarama.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-10-04T15:10:31.06	2019-10-04T14:10:30	2020-01-02T14:10:30	kritnu.com	*.birarama.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3