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

Results forwebdisk.btsoftwarehouse.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-09-24T11:34:57.497	2019-09-24T00:00:00	2019-12-23T23:59:59	btsoftwarehouse.com	webdisk.btsoftwarehouse.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2019-09-24T11:34:37.784	2019-09-24T00:00:00	2019-12-23T23:59:59	btsoftwarehouse.com	webdisk.btsoftwarehouse.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2019-09-13T04:47:41.68	2019-09-13T00:00:00	2019-12-12T23:59:59	btsoftwarehouse.com	webdisk.btsoftwarehouse.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2019-09-13T04:47:22.356	2019-09-13T00:00:00	2019-12-12T23:59:59	btsoftwarehouse.com	webdisk.btsoftwarehouse.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"