How do I contact USPS about international packages?

How do I contact USPS about international packages? Call 1-800-222-1811. Customers will need a 10-digit GXG tracking number which starts with either “82” or “83” and the GXG Air Waybill (PS Form 11FGG1) as evidence of mailing. Online inquiries can only be initiated by the U.S. sender. Where is my package USPS International? To initiate

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