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

Results for*.hackfest.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2018-11-28T22:35:17.547	2018-11-03T01:34:09	2019-11-03T01:34:09	*.hackfest.com	*.hackfest.com	C=US, ST=Arizona, L=Scottsdale, O="GoDaddy.com, Inc.", OU=http://certs.godaddy.com/repository/, CN=Go Daddy Secure Certificate Authority - G2
2018-11-28T22:35:17.547	2018-11-03T01:34:09	2019-11-03T01:34:09	*.hackfest.com	*.hackfest.com	C=US, ST=Arizona, L=Scottsdale, O="GoDaddy.com, Inc.", OU=http://certs.godaddy.com/repository/, CN=Go Daddy Secure Certificate Authority - G2
2018-11-03T01:34:09.952	2018-11-03T01:34:09	2019-11-03T01:34:09	*.hackfest.com	*.hackfest.com	C=US, ST=Arizona, L=Scottsdale, O="GoDaddy.com, Inc.", OU=http://certs.godaddy.com/repository/, CN=Go Daddy Secure Certificate Authority - G2
2018-11-03T01:34:09.952	2018-11-03T01:34:09	2019-11-03T01:34:09	*.hackfest.com	*.hackfest.com	C=US, ST=Arizona, L=Scottsdale, O="GoDaddy.com, Inc.", OU=http://certs.godaddy.com/repository/, CN=Go Daddy Secure Certificate Authority - G2