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

Results for*.echofive.net

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-05-17T22:23:26.117	2019-04-29T00:00:00	2020-04-29T12:00:00	sni.cloudflaressl.com	*.echofive.net	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2
2019-05-17T22:23:26.117	2019-04-29T00:00:00	2020-04-29T12:00:00	sni.cloudflaressl.com	*.echofive.net	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2
2019-04-29T21:07:45.107	2019-04-29T00:00:00	2020-04-29T12:00:00	sni.cloudflaressl.com	*.echofive.net	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2
2019-04-29T21:07:45.107	2019-04-29T00:00:00	2020-04-29T12:00:00	sni.cloudflaressl.com	*.echofive.net	C=US, ST=CA, L=San Francisco, O="CloudFlare, Inc.", CN=CloudFlare Inc ECC CA-2