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

Results forwebmail.mcwatt.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-08-15T01:40:05.52	2023-08-15T00:40:05	2023-11-13T00:40:04	*.mcwatt.com	*.mcwatt.com	C=US, O=Let's Encrypt, CN=R3
2023-08-15T01:40:05.375	2023-08-15T00:40:05	2023-11-13T00:40:04	*.mcwatt.com	*.mcwatt.com	C=US, O=Let's Encrypt, CN=R3
2023-06-14T22:41:28.508	2023-06-14T21:41:28	2023-09-12T21:41:27	*.mcwatt.com	*.mcwatt.com	C=US, O=Let's Encrypt, CN=R3
2023-06-14T22:41:28.407	2023-06-14T21:41:28	2023-09-12T21:41:27	*.mcwatt.com	*.mcwatt.com	C=US, O=Let's Encrypt, CN=R3
2023-04-14T19:47:00.821	2023-04-14T18:47:00	2023-07-13T18:46:59	*.mcwatt.com	*.mcwatt.com	C=US, O=Let's Encrypt, CN=R3
2023-04-14T19:47:00.474	2023-04-14T18:47:00	2023-07-13T18:46:59	*.mcwatt.com	*.mcwatt.com	C=US, O=Let's Encrypt, CN=R3
2019-08-27T19:31:25.428	2019-08-27T00:00:00	2019-11-25T23:59:59	mcwatt.com	webmail.mcwatt.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2019-08-27T19:31:05.27	2019-08-27T00:00:00	2019-11-25T23:59:59	mcwatt.com	webmail.mcwatt.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"