David Wang
-Updated on June 24, 2026
What is a CTT tracking number?
A CTT tracking number is a code assigned to registered, parcel, and express items handled by CTT - Correios de Portugal. It is most often 13 characters long in the international UPU format: two letters, nine digits, and the country code PT (for example, RR123456789PT). You use it to follow your shipment from acceptance to delivery.
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