The POSTNET Barcode Certification program evaluates and certifies manufacturers' printers, computer software, and systems (micro, mini, or mainframe) that produce POSTNET barcodes by verifying that the POSTNET barcode produced meets all dimensional specifications required by United States Postal Service® barcode reader equipment.

Vendors who successfuly complete the process are issued a POSTNET Barcode Certificate of Quality and are listed, along with the specific certified product, in the POSTNET Barcode Certification Vendor List, which is published periodically and is available from the National Customer Support Center (NCSC).

The USPS can perform the certification on-site or you may elect to send in your equipment to be certified. There is a one-time certification charge which varies depending on the choice of certification.

For additional information, contact a representative at the NCSC at 877-640-0724. Click the appropriate link below to view the POSTNET Barcode Certification Technical Guide, a list of certified vendors, or an application.