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

Results for*.isys.cc

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-09-10T11:30:19.398	2020-09-07T00:00:00	2021-09-08T12:00:00	isys.cc	*.isys.cc	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-09-10T11:30:19.398	2020-09-07T00:00:00	2021-09-08T12:00:00	isys.cc	*.isys.cc	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-09-07T21:37:33.75	2020-09-07T00:00:00	2021-09-08T12:00:00	isys.cc	*.isys.cc	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-09-07T21:37:33.75	2020-09-07T00:00:00	2021-09-08T12:00:00	isys.cc	*.isys.cc	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1