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

Results forwebmail.server.selftech.in

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2024-08-18T17:01:33.652	2024-08-18T16:03:03	2024-11-16T16:03:02	server.selftech.in	webmail.server.selftech.in	C=US, O=Let's Encrypt, CN=R10
2024-08-18T17:01:33.326	2024-08-18T16:03:03	2024-11-16T16:03:02	server.selftech.in	webmail.server.selftech.in	C=US, O=Let's Encrypt, CN=R10
2024-06-19T12:33:02.234	2024-06-19T11:33:01	2024-09-17T11:33:00	server.selftech.in	webmail.server.selftech.in	C=US, O=Let's Encrypt, CN=R11
2024-06-19T12:33:01.988	2024-06-19T11:33:01	2024-09-17T11:33:00	server.selftech.in	webmail.server.selftech.in	C=US, O=Let's Encrypt, CN=R11
2022-12-14T23:46:47.038	2022-12-14T00:00:00	2023-03-14T23:59:59	server.selftech.in	webmail.server.selftech.in	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2022-12-14T23:46:45.882	2022-12-14T00:00:00	2023-03-14T23:59:59	server.selftech.in	webmail.server.selftech.in	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2022-10-07T23:46:15.242	2022-10-07T00:00:00	2023-01-05T23:59:59	server.selftech.in	webmail.server.selftech.in	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2022-10-07T23:46:13.942	2022-10-07T00:00:00	2023-01-05T23:59:59	server.selftech.in	webmail.server.selftech.in	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"