David Wang
-Updated on June 24, 2026
What does a Correos de México tracking number look like?
Most trackable items use the Universal Postal Union S10 format: two letters, nine digits, and the country code MX, for a total of 13 characters (for example RR123456789MX). The first two letters indicate the service type, such as R for registered mail or E for Mexpost express.
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