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

Results for*.qfilter.nl

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2014-10-19T11:31:33.911	2014-10-16T00:00:00	2017-10-28T23:59:59	*.qfilter.nl	*.qfilter.nl	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA
2014-10-19T11:31:33.911	2014-10-16T00:00:00	2017-10-28T23:59:59	*.qfilter.nl	*.qfilter.nl	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA
2013-04-26T11:47:32.188	2011-10-31T00:00:00	2014-10-30T23:59:59	*.qfilter.nl	*.qfilter.nl	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=EssentialSSL CA
2013-04-26T11:47:32.188	2011-10-31T00:00:00	2014-10-30T23:59:59	*.qfilter.nl	*.qfilter.nl	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=EssentialSSL CA