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

Results for*.instacoon.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-01-31T17:28:20.703	2020-01-29T00:00:00	2021-01-29T12:00:00	instacoon.com	*.instacoon.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-01-31T17:28:20.703	2020-01-29T00:00:00	2021-01-29T12:00:00	instacoon.com	*.instacoon.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-01-29T11:41:29.226	2020-01-29T00:00:00	2021-01-29T12:00:00	instacoon.com	*.instacoon.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-01-29T11:41:29.226	2020-01-29T00:00:00	2021-01-29T12:00:00	instacoon.com	*.instacoon.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1