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

Results forwebdisk.kustro.leftor.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-07-18T22:57:56.158	2021-07-18T00:00:00	2021-10-16T23:59:59	kustro.leftor.com	webdisk.kustro.leftor.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-07-18T22:57:55.19	2021-07-18T00:00:00	2021-10-16T23:59:59	kustro.leftor.com	webdisk.kustro.leftor.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-05-02T22:50:50.239	2021-05-02T00:00:00	2021-07-31T23:59:59	kustro.leftor.com	webdisk.kustro.leftor.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-05-02T22:50:49.858	2021-05-02T00:00:00	2021-07-31T23:59:59	kustro.leftor.com	webdisk.kustro.leftor.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-02-15T13:29:22.867	2021-02-15T00:00:00	2021-05-16T23:59:59	kustro.leftor.com	webdisk.kustro.leftor.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-02-15T13:29:22.566	2021-02-15T00:00:00	2021-05-16T23:59:59	kustro.leftor.com	webdisk.kustro.leftor.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"