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

Results for*.unnyc.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-03-25T15:35:29.055	2021-03-13T00:00:00	2022-03-13T23:59:59	unnyc.com	*.unnyc.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-03-25T15:35:29.055	2021-03-13T00:00:00	2022-03-13T23:59:59	unnyc.com	*.unnyc.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-03-13T19:58:38.902	2021-03-13T00:00:00	2022-03-13T23:59:59	unnyc.com	*.unnyc.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-03-13T19:58:38.902	2021-03-13T00:00:00	2022-03-13T23:59:59	unnyc.com	*.unnyc.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1