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

Results for*.ocazul.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-03-14T19:13:38.882	2020-02-22T00:00:00	2021-02-22T12:00:00	ocazul.com	*.ocazul.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-03-14T19:13:38.882	2020-02-22T00:00:00	2021-02-22T12:00:00	ocazul.com	*.ocazul.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-02-22T23:19:57.667	2020-02-22T00:00:00	2021-02-22T12:00:00	ocazul.com	*.ocazul.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-02-22T23:19:57.667	2020-02-22T00:00:00	2021-02-22T12:00:00	ocazul.com	*.ocazul.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1