Is there an algorithm to detect if a tracking number is a valid fedex tracking number or not ?


I am looking for a mathematical procedure and not a manual one (like going to :) )

4 Answers

  • 2 decades ago
    Favorite Answer

    1) If Fedex Express :

    Tracking number: 123456789012

    Consider 1234567890[1][2], the marked 1 is the tens place and the marked 2 is the ones place.

    Start with the tens place of the tracking number and move left. Multiply each digit with 1 or 3 or 7 in that order and add up the products.



    (1*1) = 178

    Then perform a modulus (remainder) operation with 11, 178 % 11 = 2. This is the check digit.

    The check digit is 0 in the case of 10. This digit should equal the ones place digit of the tracking number to pass the "is it a fedex tracking number ?".

    2) If Fedex Ground :

  • Adam S
    Lv 5
    2 decades ago

    It's easy: Go to, copy it into their slot on their page for tracking numbers and press "go". If it recognizes it, you are in good shape. If it doesn't, then it probably isn't a fedex number.

  • 4 years ago

    Federal Express Tracking Number

  • Anonymous
    2 decades ago

    You will likely have to go to work for Fedex to find that out. As I understand it the algorithmic procedure they use is proprietary.

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