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

Results forwww.proxy.thrivedeskdocs.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-06-13T02:07:21.254	2023-06-13T00:00:00	2023-09-11T23:59:59	www.proxy.thrivedeskdocs.com	www.proxy.thrivedeskdocs.com	C=AT, O=ZeroSSL, CN=ZeroSSL ECC Domain Secure Site CA
2023-06-13T02:07:20.565	2023-06-13T00:00:00	2023-09-11T23:59:59	www.proxy.thrivedeskdocs.com	www.proxy.thrivedeskdocs.com	C=AT, O=ZeroSSL, CN=ZeroSSL ECC Domain Secure Site CA
2023-06-05T11:39:23.423	2023-06-05T00:00:00	2023-09-03T23:59:59	www.proxy.thrivedeskdocs.com	www.proxy.thrivedeskdocs.com	C=AT, O=ZeroSSL, CN=ZeroSSL ECC Domain Secure Site CA
2023-06-05T11:39:22.804	2023-06-05T00:00:00	2023-09-03T23:59:59	www.proxy.thrivedeskdocs.com	www.proxy.thrivedeskdocs.com	C=AT, O=ZeroSSL, CN=ZeroSSL ECC Domain Secure Site CA