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

Results for*.chuckbuddy.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-02-01T20:53:31.778	2021-02-01T19:53:31	2021-05-02T19:53:31	chuckbuddy.com	*.chuckbuddy.com	C=US, O=Let's Encrypt, CN=R3
2021-02-01T20:53:31.778	2021-02-01T19:53:31	2021-05-02T19:53:31	chuckbuddy.com	*.chuckbuddy.com	C=US, O=Let's Encrypt, CN=R3
2021-02-01T20:53:31.475	2021-02-01T19:53:31	2021-05-02T19:53:31	chuckbuddy.com	*.chuckbuddy.com	C=US, O=Let's Encrypt, CN=R3
2021-02-01T20:53:31.475	2021-02-01T19:53:31	2021-05-02T19:53:31	chuckbuddy.com	*.chuckbuddy.com	C=US, O=Let's Encrypt, CN=R3
2020-10-29T14:11:27.595	2020-10-29T00:00:00	2021-10-29T23:59:59	chuckbuddy.com	*.chuckbuddy.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-10-29T14:11:27.595	2020-10-29T00:00:00	2021-10-29T23:59:59	chuckbuddy.com	*.chuckbuddy.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1