Free Freight Tool
AWB Number Validator: Air Waybill Check Digit
Validate air waybill numbers, check the Modulus 7 check digit, and identify the airline from the three-digit prefix.
An air waybill number has a three-digit airline prefix and an eight-digit serial. The last digit is a Modulus 7 check digit, which helps catch typing errors.
How to use the AWB Number Validator
- Enter the 11-digit AWB number.
- Review the check digit result.
- Use the prefix to identify the airline and open its tracking page.
How to read the result
Tool results are planning aids. Confirm final values with the carrier, forwarder, or customs representative when they affect cost, compliance, or acceptance.
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Frequently asked questions
How do I validate an AWB number?
Divide the first seven serial digits by 7. The remainder should match the eighth serial digit.