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

Results forgroup36.sites.hscoscdn30.net

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-09-03T16:09:14.188	2021-09-03T00:00:00	2022-09-02T23:59:59	group36.sites.hscoscdn30.net	group36.sites.hscoscdn30.net	C=US, O="Cloudflare, Inc.", CN=Cloudflare Inc ECC CA-3
2021-09-03T16:09:13.029	2021-09-03T00:00:00	2022-09-02T23:59:59	group36.sites.hscoscdn30.net	group36.sites.hscoscdn30.net	C=US, O="Cloudflare, Inc.", CN=Cloudflare Inc RSA CA-2
2021-08-31T18:58:01.257	2021-08-31T00:00:00	2022-08-30T23:59:59	group36.sites.hscoscdn30.net	group36.sites.hscoscdn30.net	C=US, O="Cloudflare, Inc.", CN=Cloudflare Inc ECC CA-3
2021-08-31T18:58:00.284	2021-08-31T00:00:00	2022-08-30T23:59:59	group36.sites.hscoscdn30.net	group36.sites.hscoscdn30.net	C=US, O="Cloudflare, Inc.", CN=Cloudflare Inc RSA CA-2