POSTNET
（重定向自DPBC）
![San Bernardino USPS facility with valid and correct barcode on building](/Images/godic/202501/09/USPS_San_Bernardino_Center2925.jpg")
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. Most often, the delivery point is added, usually being the last two digits of the address or PO box number.