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

Results for*.rprogress.org

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-07-11T06:29:49.951	2020-07-08T00:00:00	2021-07-08T12:00:00	sni.cloudflaressl.com	*.rprogress.org	C=US, O="Cloudflare, Inc.", CN=Cloudflare Inc ECC CA-3
2020-07-11T06:29:49.951	2020-07-08T00:00:00	2021-07-08T12:00:00	sni.cloudflaressl.com	*.rprogress.org	C=US, O="Cloudflare, Inc.", CN=Cloudflare Inc ECC CA-3
2020-07-08T07:53:19.688	2020-07-08T00:00:00	2021-07-08T12:00:00	sni.cloudflaressl.com	*.rprogress.org	C=US, O="Cloudflare, Inc.", CN=Cloudflare Inc ECC CA-3
2020-07-08T07:53:19.688	2020-07-08T00:00:00	2021-07-08T12:00:00	sni.cloudflaressl.com	*.rprogress.org	C=US, O="Cloudflare, Inc.", CN=Cloudflare Inc ECC CA-3
2020-06-17T16:40:36.431	2020-06-17T15:40:36	2020-09-15T15:40:36	rprogress.org	*.rprogress.org	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-06-17T16:40:36.431	2020-06-17T15:40:36	2020-09-15T15:40:36	rprogress.org	*.rprogress.org	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-06-17T16:40:36.266	2020-06-17T15:40:36	2020-09-15T15:40:36	rprogress.org	*.rprogress.org	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-06-17T16:40:36.266	2020-06-17T15:40:36	2020-09-15T15:40:36	rprogress.org	*.rprogress.org	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3