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

Results forwebdisk.grapepag.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-07-21T03:12:59.45	2020-07-21T02:12:59	2020-10-19T02:12:59	*.grapepag.com	*.grapepag.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-07-21T03:12:59.311	2020-07-21T02:12:59	2020-10-19T02:12:59	*.grapepag.com	*.grapepag.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-07-21T02:53:58.357	2020-07-21T01:53:57	2020-10-19T01:53:57	webdisk.grapepag.com	webdisk.grapepag.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-07-21T02:53:58.172	2020-07-21T01:53:57	2020-10-19T01:53:57	webdisk.grapepag.com	webdisk.grapepag.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-03-06T21:58:39.198	2020-03-06T00:00:00	2020-06-04T23:59:59	grapepag.com	webdisk.grapepag.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2020-03-06T21:58:38.268	2020-03-06T00:00:00	2020-06-04T23:59:59	grapepag.com	webdisk.grapepag.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"