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

Results forwebdisk.bikinweb.app

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-02-24T16:57:35.949	2021-02-24T00:00:00	2021-05-25T23:59:59	bikinweb.app	webdisk.bikinweb.app	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-02-24T16:57:35.647	2021-02-24T00:00:00	2021-05-25T23:59:59	bikinweb.app	webdisk.bikinweb.app	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-01-20T02:42:34.25	2021-01-20T00:00:00	2021-04-20T23:59:59	bikinweb.app	webdisk.bikinweb.app	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-01-20T02:42:33.849	2021-01-20T00:00:00	2021-04-20T23:59:59	bikinweb.app	webdisk.bikinweb.app	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"