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

Results for*.spirlo.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2017-01-19T11:30:03.265	2017-01-14T00:00:00	2017-07-23T23:59:59	sni211212.cloudflaressl.com	*.spirlo.com	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO ECC Domain Validation Secure Server CA 2
2017-01-19T11:30:03.265	2017-01-14T00:00:00	2017-07-23T23:59:59	sni211212.cloudflaressl.com	*.spirlo.com	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO ECC Domain Validation Secure Server CA 2
2017-01-01T12:18:08.65	2016-12-31T00:00:00	2017-07-02T23:59:59	sni211212.cloudflaressl.com	*.spirlo.com	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO ECC Domain Validation Secure Server CA 2
2017-01-01T12:18:08.65	2016-12-31T00:00:00	2017-07-02T23:59:59	sni211212.cloudflaressl.com	*.spirlo.com	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO ECC Domain Validation Secure Server CA 2