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

Results for*.dev.carbon.andersonopt.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-02-10T09:04:15.649	2023-02-10T00:00:00	2023-03-31T23:59:59	andersonopt.com	*.dev.carbon.andersonopt.com	C=US, O=Amazon, CN=Amazon RSA 2048 M01
2023-02-10T09:04:15.649	2023-02-10T00:00:00	2023-03-31T23:59:59	andersonopt.com	*.dev.carbon.andersonopt.com	C=US, O=Amazon, CN=Amazon RSA 2048 M01
2022-03-02T21:53:44.211	2022-03-02T00:00:00	2023-03-31T23:59:59	andersonopt.com	*.dev.carbon.andersonopt.com	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2022-03-02T21:53:44.211	2022-03-02T00:00:00	2023-03-31T23:59:59	andersonopt.com	*.dev.carbon.andersonopt.com	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon