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

Results for*.deks.eu

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-12-01T01:10:05.55	2019-11-26T00:00:00	2020-11-26T12:00:00	deks.eu	*.deks.eu	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-12-01T01:10:05.55	2019-11-26T00:00:00	2020-11-26T12:00:00	deks.eu	*.deks.eu	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-11-26T04:41:47.776	2019-11-26T00:00:00	2020-11-26T12:00:00	deks.eu	*.deks.eu	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-11-26T04:41:47.776	2019-11-26T00:00:00	2020-11-26T12:00:00	deks.eu	*.deks.eu	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1