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

Results for*.upfhat.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-04-16T22:35:25.659	2020-04-14T00:00:00	2021-04-15T12:00:00	upfhat.com	*.upfhat.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-04-16T22:35:25.659	2020-04-14T00:00:00	2021-04-15T12:00:00	upfhat.com	*.upfhat.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-04-14T00:30:44.997	2020-04-14T00:00:00	2021-04-15T12:00:00	upfhat.com	*.upfhat.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-04-14T00:30:44.997	2020-04-14T00:00:00	2021-04-15T12:00:00	upfhat.com	*.upfhat.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1