AWS - Could not resolve host error

I'm a newbie to Elastic and myy APM version is 6.6.1. I'm trying to access some APM transaction data in the AWS cloud using curl. I used Dev Tools to get the curl command:

curl -XGET "http://XXNUMBERS.containerhost:9244/apm-6.6.1-transaction-2019.03.04/_search"

However, when I try to access this via curl, I get a Could not resolve host: XXNUMBERS.containerhost error. I tried to ping the url and am getting the same error.

Am I missing something? How can we get this data remotely via curl?

Duplicate of Access APM cloud remotely