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

Results for*.pcreducator.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2016-12-14T01:39:49.514	2016-12-07T00:00:00	2017-09-19T23:59:59	*.pcreducator.com	*.pcreducator.com	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Organization Validation Secure Server CA
2016-12-14T01:39:49.514	2016-12-07T00:00:00	2017-09-19T23:59:59	*.pcreducator.com	*.pcreducator.com	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Organization Validation Secure Server CA
2016-11-30T00:26:51.128	2016-09-19T00:00:00	2017-09-19T23:59:59	*.pcreducator.com	*.pcreducator.com	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Organization Validation Secure Server CA
2016-11-30T00:26:51.128	2016-09-19T00:00:00	2017-09-19T23:59:59	*.pcreducator.com	*.pcreducator.com	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Organization Validation Secure Server CA