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

Results for*.ladyviola.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-08-02T19:34:02.047	2020-07-26T00:00:00	2021-07-27T12:00:00	ladyviola.com	*.ladyviola.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-08-02T19:34:02.047	2020-07-26T00:00:00	2021-07-27T12:00:00	ladyviola.com	*.ladyviola.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-07-26T13:15:23.85	2020-07-26T00:00:00	2021-07-27T12:00:00	ladyviola.com	*.ladyviola.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-07-26T13:15:23.85	2020-07-26T00:00:00	2021-07-27T12:00:00	ladyviola.com	*.ladyviola.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1