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

Results for*.uydurdum.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-02-15T22:01:13.175	2020-02-10T00:00:00	2021-02-10T12:00:00	uydurdum.com	*.uydurdum.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-02-15T22:01:13.175	2020-02-10T00:00:00	2021-02-10T12:00:00	uydurdum.com	*.uydurdum.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-02-10T14:13:31.628	2020-02-10T00:00:00	2021-02-10T12:00:00	uydurdum.com	*.uydurdum.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-02-10T14:13:31.628	2020-02-10T00:00:00	2021-02-10T12:00:00	uydurdum.com	*.uydurdum.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1