I have to admit, I’ve known about this for a very long time as client Voxbone has been working with the ITU to establish the +883 country code.
Carriers are jumping on board already including client Mobivox, Jajah, Gizmo5, Ribbit, iotum, Rebtel, Voipbuster, Voxeo, Voipuser and a host of others. More are expected to be added.