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

Results for*.eju.co

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-03-15T11:24:40.481	2020-03-11T00:00:00	2021-03-12T12:00:00	eju.co	*.eju.co	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-03-15T11:24:40.481	2020-03-11T00:00:00	2021-03-12T12:00:00	eju.co	*.eju.co	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-03-11T22:31:44.876	2020-03-11T00:00:00	2021-03-12T12:00:00	eju.co	*.eju.co	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-03-11T22:31:44.876	2020-03-11T00:00:00	2021-03-12T12:00:00	eju.co	*.eju.co	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1