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POSTNET (Postal Numeric Encoding Technique)

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POSTNET (Postal Numeric Encoding Technique) is a barcode symbology used by the United States Postal Service to assist in directing mail. The ZIP Code or ZIP+4 code is encoded in half- and full-height bars.[1] Most often, the delivery point is added, usually being the last two digits of the address or PO box number.
 

 POSTNET (Postal Numeric Encoding Technique)