The DID number will be forwarded to the mapping you created immediately, please make sure that your mapping is correct.
To see how to map existing DID numbers please see How to Map Existing DID Number?
You can see the list of DIDWW IP addresses at The List of DIDWW IP Addresses.
Article is in the following categories:
KB » DID Number Mapping
KB » DID Number Mapping

How Long Does it Take to Re-Map a DID Number to a New Mapping?