I don't know which company shipped this package, but... if there is a tracking number, it's probably for tracking. For the really big express shipping companies (DHL, UPS, FedEx...), searching for the number via Google usually provides the link to the tracking immediately.
Order tracking can sometimes be "dubious" (for example, GLS rarely updates the status of the package...). So be it! Be patient, customs can extend delivery times, as well as many other factors,...