On PackageRadar website «Arrived at customs office of departure country» status means these statuses of Uzbekistan Post:
With the use of our tracking form you can easily check the status of your package. Also if you want to tracking Uzbekistan Post and get your package location updates to your e-mail, you can Register on our website.
Uzbekistan Post — is not the only postal service that you can track at PackageRadar. See full list of postal services available.