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

Results for*.dotartsy.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2018-12-10T14:59:38.135	2018-12-07T00:00:00	2019-12-07T12:00:00	sni.cloudflaressl.com	*.dotartsy.com	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2
2018-12-10T14:59:38.135	2018-12-07T00:00:00	2019-12-07T12:00:00	sni.cloudflaressl.com	*.dotartsy.com	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2
2018-12-07T03:46:44.771	2018-12-07T00:00:00	2019-12-07T12:00:00	sni.cloudflaressl.com	*.dotartsy.com	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2
2018-12-07T03:46:44.771	2018-12-07T00:00:00	2019-12-07T12:00:00	sni.cloudflaressl.com	*.dotartsy.com	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2