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

Results for*.classes.de

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-12-12T07:09:11.005	2020-12-09T00:00:00	2021-12-09T23:59:59	classes.de	*.classes.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-12-12T07:09:11.005	2020-12-09T00:00:00	2021-12-09T23:59:59	classes.de	*.classes.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-12-09T13:08:31.188	2020-12-09T00:00:00	2021-12-09T23:59:59	classes.de	*.classes.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-12-09T13:08:31.188	2020-12-09T00:00:00	2021-12-09T23:59:59	classes.de	*.classes.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-12-07T19:04:25.89	2019-11-21T00:00:00	2020-11-21T12:00:00	classes.de	*.classes.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-12-07T19:04:25.89	2019-11-21T00:00:00	2020-11-21T12:00:00	classes.de	*.classes.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-11-21T05:26:56.183	2019-11-21T00:00:00	2020-11-21T12:00:00	classes.de	*.classes.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-11-21T05:26:56.183	2019-11-21T00:00:00	2020-11-21T12:00:00	classes.de	*.classes.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1