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

Results forstore.localbazaar.app

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-03-22T09:19:07.043	2020-03-22T08:19:06	2020-06-20T08:19:06	www.inclass.app	store.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-03-22T09:19:06.302	2020-03-22T08:19:06	2020-06-20T08:19:06	www.inclass.app	store.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-21T19:05:43.742	2020-01-21T18:05:43	2020-04-20T18:05:43	doryswimming.club	store.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-21T19:05:43.588	2020-01-21T18:05:43	2020-04-20T18:05:43	doryswimming.club	store.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-19T16:55:17.738	2020-01-19T15:55:17	2020-04-18T15:55:17	store.localbazaar.app	store.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-19T16:55:17.409	2020-01-19T15:55:17	2020-04-18T15:55:17	store.localbazaar.app	store.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3