Hello Slavas!

Thanks for posting in our Community. When a USPS tracking numbers begins with "H", it means that  "ECOMPRO" is being used to track the shipment. ECOMPRO is a service available on select USPS Priority Mail International shipments. Most notably, ECOMPRO shipments can be tracked all the way to the destination country. Learn more about ECOMPRO

I hope this helps, but please let us know if you have further questions.