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

Results for*.collabera.ca

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-04-16T10:52:06.956	2019-04-16T00:00:00	2020-04-15T23:59:59	*.collabera.ca	*.collabera.ca	C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA
2019-04-16T10:52:06.956	2019-04-16T00:00:00	2020-04-15T23:59:59	*.collabera.ca	*.collabera.ca	C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA
2019-04-16T10:51:46.158	2019-04-16T00:00:00	2020-04-15T23:59:59	*.collabera.ca	*.collabera.ca	C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA
2019-04-16T10:51:46.158	2019-04-16T00:00:00	2020-04-15T23:59:59	*.collabera.ca	*.collabera.ca	C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA