Certify Zip Code Record For Free

It is likely that your usps.com® profile is not updated with your current address. The best way to prevent this issue is to submit an Official Change of Address online at moversguide.usps.com, in person at a Post Office?, or through your carrier.

One of the most common ways to validate an address is to use the USPS Address Verification tool. This tool is available on the USPS website and can be used to verify the accuracy of address information and standardize it to conform to USPS formatting rules.

USPS Doesn't Recognize My Address! Sometimes, an address will not validate because the address is marked as "vacant" by the USPS. Additionally, a new address, an unregistered address, or one located within a postal code primarily serviced by PO boxes, would all fail to validate.

CASS(Coding Accuracy Support System) Certification is program that was developed by the USPS to test the accuracy of address-matching software and improve the accuracy of postal coding, such as ZIP+4 Code®, carrier route and 5-digit ZIP Code coding.

To achieve CASS2122 certification, participants must pass with a minimum score of 98.5 percent for ZIP + 4, carrier route, Five-Digit ZIP and LACSLink, 100 percent for delivery point coding, eLOT, DPV or DSF2, RDI and Perfect Address. CASS2122 certification is valid until the end of the current certification period.

CASS, (the Coding Accuracy Support System) is a voluntary certification system provided by the United States Postal Service for mail services providers. CASS certification means that a service or application works correctly with the internal USPS systems within the United States.

To achieve CASS2122 certification, participants must pass with a minimum score of 98.5 percent for ZIP + 4, carrier route, Five-Digit ZIP and LACSLink, 100 percent for delivery point coding, eLOT, DPV or DSF2, RDI and Perfect Address. CASS2122 certification is valid until the end of the current certification period.

Mailers who are using carrier route sorting must update their CASS certification at least every 90 days. That means that for barcoded mailings, every address must have been verified using a CASS-certified method no more than 180 days before the mailing is delivered to USPS.

A CASS file is a program file used to emulate a cassette-based program created for the Apple II computer. It contains a copy of the data stored on an Apple II cassette, converted for use with Virtual , an Apple II emulator.

How often do I have to CASS-certify my mailing list? Mailers who are using Intelligent Mail barcodes on their bulk mailings must update the CASS certification for their mailing list at least once every 180 days. Mailers who are using carrier route sorting must update their CASS certification at least every 90 days.