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

Results for*.starmark.org

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-04-06T02:59:05.941	2020-04-03T00:00:00	2021-04-04T12:00:00	starmark.org	*.starmark.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-04-06T02:59:05.941	2020-04-03T00:00:00	2021-04-04T12:00:00	starmark.org	*.starmark.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-04-03T16:30:41.749	2020-04-03T00:00:00	2021-04-04T12:00:00	starmark.org	*.starmark.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-04-03T16:30:41.749	2020-04-03T00:00:00	2021-04-04T12:00:00	starmark.org	*.starmark.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1