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

Results forwebmail.launchisp.hdwebdev.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-02-18T03:38:08.238	2021-02-18T00:00:00	2021-05-19T23:59:59	launchisp.hdwebdev.com	webmail.launchisp.hdwebdev.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-02-18T03:38:07.943	2021-02-18T00:00:00	2021-05-19T23:59:59	launchisp.hdwebdev.com	webmail.launchisp.hdwebdev.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-01-06T03:11:25.792	2021-01-06T00:00:00	2021-04-06T23:59:59	launchisp.hdwebdev.com	webmail.launchisp.hdwebdev.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-01-06T03:11:25.253	2021-01-06T00:00:00	2021-04-06T23:59:59	launchisp.hdwebdev.com	webmail.launchisp.hdwebdev.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"