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

Results for*.staffaa.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-10-11T22:54:46.077	2020-09-24T00:00:00	2021-09-25T12:00:00	staffaa.com	*.staffaa.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-10-11T22:54:46.077	2020-09-24T00:00:00	2021-09-25T12:00:00	staffaa.com	*.staffaa.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-09-24T03:26:00.117	2020-09-24T00:00:00	2021-09-25T12:00:00	staffaa.com	*.staffaa.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-09-24T03:26:00.117	2020-09-24T00:00:00	2021-09-25T12:00:00	staffaa.com	*.staffaa.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1