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

Results forwebmail.cmdinfotech.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2018-10-05T21:51:55.565	2018-10-05T00:00:00	2019-01-03T23:59:59	mail.cmdinfotech.com	webmail.cmdinfotech.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2018-10-05T21:51:41.58	2018-10-05T00:00:00	2019-01-03T23:59:59	mail.cmdinfotech.com	webmail.cmdinfotech.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2018-07-21T21:52:06.686	2018-07-21T00:00:00	2018-10-19T23:59:59	mail.cmdinfotech.com	webmail.cmdinfotech.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2018-07-21T21:51:48.932	2018-07-21T00:00:00	2018-10-19T23:59:59	mail.cmdinfotech.com	webmail.cmdinfotech.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2018-05-06T21:53:15.675	2018-05-06T00:00:00	2018-08-04T23:59:59	mail.cmdinfotech.com	webmail.cmdinfotech.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2018-05-06T21:52:49.902	2018-05-06T00:00:00	2018-08-04T23:59:59	mail.cmdinfotech.com	webmail.cmdinfotech.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"