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

Results forany.changes.in

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-10-11T01:19:56.914	2021-10-11T00:19:56	2022-01-09T00:19:55	any.changes.in	any.changes.in	C=US, O=Let's Encrypt, CN=R3
2021-10-11T01:19:56.652	2021-10-11T00:19:56	2022-01-09T00:19:55	any.changes.in	any.changes.in	C=US, O=Let's Encrypt, CN=R3
2021-07-21T07:45:32.225	2021-07-21T06:45:31	2021-10-19T06:45:29	any.changes.in	any.changes.in	C=US, O=Let's Encrypt, CN=R3
2021-07-21T07:45:31.79	2021-07-21T06:45:31	2021-10-19T06:45:29	any.changes.in	any.changes.in	C=US, O=Let's Encrypt, CN=R3
2021-04-29T09:37:27.118	2021-04-29T08:37:26	2021-07-28T08:37:26	any.changes.in	any.changes.in	C=US, O=Let's Encrypt, CN=R3
2021-04-29T09:37:26.983	2021-04-29T08:37:26	2021-07-28T08:37:26	any.changes.in	any.changes.in	C=US, O=Let's Encrypt, CN=R3
2021-03-25T21:33:48.11	2021-03-25T20:33:47	2021-06-23T20:33:47	changes.in	*.changes.in	C=US, O=Let's Encrypt, CN=R3
2021-03-25T21:33:47.497	2021-03-25T20:33:47	2021-06-23T20:33:47	changes.in	*.changes.in	C=US, O=Let's Encrypt, CN=R3