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

Results for*.vpbx.nwcomputing.com.au

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2017-04-04T00:42:51.978	2017-04-04T00:00:00	2019-04-03T23:59:59	*.vpbx.nwcomputing.com.au	*.vpbx.nwcomputing.com.au	C=US, O=GeoTrust Inc., OU=Domain Validated SSL, CN=GeoTrust DV SSL CA - G3
2017-04-04T00:42:51.978	2017-04-04T00:00:00	2019-04-03T23:59:59	*.vpbx.nwcomputing.com.au	*.vpbx.nwcomputing.com.au	C=US, O=GeoTrust Inc., OU=Domain Validated SSL, CN=GeoTrust DV SSL CA - G3
2017-04-03T08:07:46.042	2017-04-03T00:00:00	2019-04-03T23:59:59	*.vpbx.nwcomputing.com.au	*.vpbx.nwcomputing.com.au	C=US, O=GeoTrust Inc., OU=Domain Validated SSL, CN=GeoTrust DV SSL CA - G3
2017-04-03T08:07:46.042	2017-04-03T00:00:00	2019-04-03T23:59:59	*.vpbx.nwcomputing.com.au	*.vpbx.nwcomputing.com.au	C=US, O=GeoTrust Inc., OU=Domain Validated SSL, CN=GeoTrust DV SSL CA - G3