Queue Monitor

We create queues for inbound calls,suppose we want to monitor those calls,we have the monitor option,but when we get the recorded file we have the caller number but no called party number,
Is there any option to get that called party number without agents (sip members) or with agent in the queue.
My idea was to start the recording after the call is in the queue and landed on the extension or to some how grep the called extension.

Any suggestions…