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

Results forwebdisk.wmsap.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2018-06-06T15:31:41.766	2018-06-06T00:00:00	2018-09-04T23:59:59	wmsap.com	webdisk.wmsap.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2018-06-06T15:31:27.269	2018-06-06T00:00:00	2018-09-04T23:59:59	wmsap.com	webdisk.wmsap.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2018-03-25T22:59:35.95	2018-03-22T00:00:00	2018-06-20T23:59:59	wmsap.com	webdisk.wmsap.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2018-03-22T15:32:38.408	2018-03-22T00:00:00	2018-06-20T23:59:59	wmsap.com	webdisk.wmsap.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2018-01-10T19:59:23.894	2018-01-05T00:00:00	2018-04-05T23:59:59	wmsap.com	webdisk.wmsap.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2017-12-10T23:56:25.429	2017-10-21T00:00:00	2018-01-19T23:59:59	wmsap.com	webdisk.wmsap.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2017-08-21T22:22:19.105	2017-08-06T00:00:00	2017-11-04T23:59:59	wmsap.com	webdisk.wmsap.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"