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Explore › Postal › RM4SCC and KIX

Postal · since 1990s

RM4SCC and KIX

UK and Dutch mail sorting

Four-state customer codes encoding the postcode and delivery point. KIX is the Dutch variant without start/stop or checksum.

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Generate RM4SCC and KIX

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At a glance

Introduced: 1990s
Created by: Royal Mail; KIX by PostNL
Characters: A–Z and 0–9
Length: Variable
Check: Mod 6 checksum (RM4SCC)
Capacity: Postcode and delivery point

Example: `SN34RD1A`

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Generation and reading use rxing (Apache 2.0), a Rust port of ZXing. Barcodes you make or scan are processed to answer your request and are not stored. GS1 prefix ranges show the issuing GS1 office, not the country of manufacture.

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