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

Results for*.vabia.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-02-13T21:44:49.436	2020-01-16T00:00:00	2021-01-16T12:00:00	vabia.com	*.vabia.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-02-13T21:44:49.436	2020-01-16T00:00:00	2021-01-16T12:00:00	vabia.com	*.vabia.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-01-16T17:50:06.515	2020-01-16T00:00:00	2021-01-16T12:00:00	vabia.com	*.vabia.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-01-16T17:50:06.515	2020-01-16T00:00:00	2021-01-16T12:00:00	vabia.com	*.vabia.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1