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

Results for*.dde-devtest.reservecloud.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-12-03T15:10:53.826	2021-10-29T00:00:00	2022-11-27T23:59:59	*.dde-devtest.reservecloud.com	*.dde-devtest.reservecloud.com	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2021-12-03T15:10:53.826	2021-10-29T00:00:00	2022-11-27T23:59:59	*.dde-devtest.reservecloud.com	*.dde-devtest.reservecloud.com	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2021-10-29T00:58:21.084	2021-10-29T00:00:00	2022-11-27T23:59:59	*.dde-devtest.reservecloud.com	*.dde-devtest.reservecloud.com	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2021-10-29T00:58:21.084	2021-10-29T00:00:00	2022-11-27T23:59:59	*.dde-devtest.reservecloud.com	*.dde-devtest.reservecloud.com	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon