First, to track a shipment you need a tracking number. If you do not have that please click here to read our guide on that.
Second, you need to know which shipping company is handling the shipment or the type of shipment. If you do not know that the sender should be able to tell you. There are also some types of shipments where you can determine this from the number:
Again, the sender should be able to tell you if you can't figure it out.