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

Results forwww.store2.ucswebsdev.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-09-06T03:22:05.984	2019-09-06T02:22:04	2019-12-05T02:22:04	store2.ucswebsdev.com	www.store2.ucswebsdev.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-06T03:22:05.323	2019-09-06T02:22:04	2019-12-05T02:22:04	store2.ucswebsdev.com	www.store2.ucswebsdev.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-05T01:18:33.726	2019-09-05T00:18:32	2019-12-04T00:18:32	store2.ucswebsdev.com	www.store2.ucswebsdev.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-05T01:18:32.636	2019-09-05T00:18:32	2019-12-04T00:18:32	store2.ucswebsdev.com	www.store2.ucswebsdev.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3