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

Results formech.webdeploy.it

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-06-09T15:35:01.55	2023-06-09T14:35:01	2023-09-07T14:35:00	mediawiki.mech.webdeploy.it	mediawiki.mech.webdeploy.it	C=US, O=Let's Encrypt, CN=R3
2023-06-09T15:35:01.374	2023-06-09T14:35:01	2023-09-07T14:35:00	mediawiki.mech.webdeploy.it	mediawiki.mech.webdeploy.it	C=US, O=Let's Encrypt, CN=R3
2023-06-07T13:34:43.535	2023-06-07T12:34:43	2023-09-05T12:34:42	mediawiki.mech.webdeploy.it	mediawiki.mech.webdeploy.it	C=US, O=Let's Encrypt, CN=R3
2023-06-07T13:34:43.383	2023-06-07T12:34:43	2023-09-05T12:34:42	mediawiki.mech.webdeploy.it	mediawiki.mech.webdeploy.it	C=US, O=Let's Encrypt, CN=R3