David Wang
-Updated on June 24, 2026
What do the letters at the start of a PTT tracking number mean?
The two opening letters identify the service. R-prefixes like RR, RA, and RB indicate registered mail (Taahhütlü), CP is used for international parcels, and EE is used for EMS express items. The TR at the end always confirms Türkiye as the country of origin.
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