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

Results for*.baseflow.ca

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-08-12T16:52:44.646	2020-08-12T00:00:00	2021-08-12T12:00:00	sni.cloudflaressl.com	*.baseflow.ca	C=US, O="Cloudflare, Inc.", CN=Cloudflare Inc ECC CA-3
2020-08-12T16:52:44.646	2020-08-12T00:00:00	2021-08-12T12:00:00	sni.cloudflaressl.com	*.baseflow.ca	C=US, O="Cloudflare, Inc.", CN=Cloudflare Inc ECC CA-3
2020-04-21T11:00:30.094	2020-04-16T00:00:00	2020-10-09T12:00:00	sni.cloudflaressl.com	*.baseflow.ca	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2
2020-04-21T11:00:30.094	2020-04-16T00:00:00	2020-10-09T12:00:00	sni.cloudflaressl.com	*.baseflow.ca	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2
2020-04-16T20:45:34.475	2020-04-16T00:00:00	2020-10-09T12:00:00	sni.cloudflaressl.com	*.baseflow.ca	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2
2020-04-16T20:45:34.475	2020-04-16T00:00:00	2020-10-09T12:00:00	sni.cloudflaressl.com	*.baseflow.ca	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2