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

Results for*.learnux101.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-10-02T19:56:20.519	2020-09-24T00:00:00	2021-09-25T12:00:00	learnux101.com	*.learnux101.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-10-02T19:56:20.519	2020-09-24T00:00:00	2021-09-25T12:00:00	learnux101.com	*.learnux101.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-09-24T03:20:12.995	2020-09-24T00:00:00	2021-09-25T12:00:00	learnux101.com	*.learnux101.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-09-24T03:20:12.995	2020-09-24T00:00:00	2021-09-25T12:00:00	learnux101.com	*.learnux101.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1