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ISO 8583 MTI Decoder

Explain a 4-digit Message Type Indicator such as 0100, 0110, 0200, 0420 or 0800.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: MTI digits: version, message class, function and origin.

How to use it (step by step)

  1. 1Fill in the boxes: “MTI”. Example numbers are already there so you can see how it works; replace them with yours.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 3The bold line is the main answer. Tap Copy next to any value to copy it.

Words to know

ISO 8583
The common “language” card machines and banks use to send payment messages to each other.

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