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

Results for*.memely.at

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-06-20T11:24:25.928	2019-06-12T00:00:00	2020-06-11T12:00:00	*.memely.at	*.memely.at	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-06-20T11:24:25.928	2019-06-12T00:00:00	2020-06-11T12:00:00	*.memely.at	*.memely.at	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-06-12T16:15:32.638	2019-06-12T00:00:00	2020-06-11T12:00:00	*.memely.at	*.memely.at	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-06-12T16:15:32.638	2019-06-12T00:00:00	2020-06-11T12:00:00	*.memely.at	*.memely.at	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1