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

Results for*.cgodev.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-03-07T01:21:38.923	2021-02-28T00:00:00	2022-02-28T23:59:59	cgodev.com	*.cgodev.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-03-07T01:21:38.923	2021-02-28T00:00:00	2022-02-28T23:59:59	cgodev.com	*.cgodev.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-02-28T16:34:44.308	2021-02-28T00:00:00	2022-02-28T23:59:59	cgodev.com	*.cgodev.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-02-28T16:34:44.308	2021-02-28T00:00:00	2022-02-28T23:59:59	cgodev.com	*.cgodev.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1