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

Results for*.voipata.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-08-17T02:55:18.056	2020-08-08T00:00:00	2021-08-09T12:00:00	voipata.com	*.voipata.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-08-17T02:55:18.056	2020-08-08T00:00:00	2021-08-09T12:00:00	voipata.com	*.voipata.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-08-08T11:34:01.665	2020-08-08T00:00:00	2021-08-09T12:00:00	voipata.com	*.voipata.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-08-08T11:34:01.665	2020-08-08T00:00:00	2021-08-09T12:00:00	voipata.com	*.voipata.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1