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

Results for*.bitcoin007.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-03-10T12:30:08.303	2020-03-08T00:00:00	2021-03-09T12:00:00	bitcoin007.com	*.bitcoin007.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-03-10T12:30:08.303	2020-03-08T00:00:00	2021-03-09T12:00:00	bitcoin007.com	*.bitcoin007.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-03-08T10:33:07.037	2020-03-08T00:00:00	2021-03-09T12:00:00	bitcoin007.com	*.bitcoin007.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-03-08T10:33:07.037	2020-03-08T00:00:00	2021-03-09T12:00:00	bitcoin007.com	*.bitcoin007.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1