Container's Check Digit
Container's Check Digit Summary
Container's Check Digit is a mobile Android app in Tools by Odino. Released in Jun 2019 (6 years ago). It has about 763+ installs Based on AppGoblin estimates, it reaches roughly 138 monthly active users . Store metadata: updated Feb 26, 2026.
Recent activity: 13 installs this week (763 over 4 weeks) View trends →
Store info: Last updated on Google Play on Feb 26, 2026 .
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App Description
Check / Generate Check Digit of a Container according to ISO 6346 specifications
The application allows to Generate or simply Verify the Check Digit (control code) of
the identification number of a Container (Container) as per ISO 6346:1995 specifications.
For example by entering the partial CNTR identifier: ABCU123456
(So 4 Letters and 6 numbers) we will have 0 as the answer which
is Check Digit calculated for those values entered.
Now let's give two quick explanations:
1) the 4 initial letters represent:
- the first three are : The proprietary code is composed of three capital letters of the Latin alphabet to indicate the owner or principal operator of the container.
- the fourth : represents the identifier of the equipment category consists of one of the following capital letters of the Latin alphabet:
* U for all containers
* J for equipment related to the transport of detachable containers
* Z for trailers and chassis
2) the 6 numbers are the serial number assigned by the owner or operator, which uniquely identifies the container within the owner / operator fleet.
https://en.wikipedia.org/wiki/ISO_6346