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

Results for*.keywager.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-03-21T17:18:02.835	2020-03-16T00:00:00	2021-03-17T12:00:00	keywager.com	*.keywager.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-03-21T17:18:02.835	2020-03-16T00:00:00	2021-03-17T12:00:00	keywager.com	*.keywager.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-03-16T12:41:49.712	2020-03-16T00:00:00	2021-03-17T12:00:00	keywager.com	*.keywager.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-03-16T12:41:49.712	2020-03-16T00:00:00	2021-03-17T12:00:00	keywager.com	*.keywager.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1