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

Results for*.dev.mapworks.io

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2016-04-20T12:51:00.042	2016-04-18T00:00:00	2019-04-24T23:59:59	*.dev.mapworks.io	*.dev.mapworks.io	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA
2016-04-20T12:51:00.042	2016-04-18T00:00:00	2019-04-24T23:59:59	*.dev.mapworks.io	*.dev.mapworks.io	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA
2015-06-21T16:08:54.384	2015-04-17T00:00:00	2016-04-16T23:59:59	*.dev.mapworks.io	*.dev.mapworks.io	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA
2015-06-21T16:08:54.384	2015-04-17T00:00:00	2016-04-16T23:59:59	*.dev.mapworks.io	*.dev.mapworks.io	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA