The DPV® Product identifies whether a ZIP + 4® coded address is currently represented in the USPS® delivery file as a known address record. It also allows users to confirm known USPS addresses, as well as, identify potential addressing issues that may hinder delivery.


Please note: Links to many of the documents on this page are temporarily on the bottom left of this page. They will be returned to their normal place soon.

Who is DPV® for?

DPV® is for customers who have to confirm if a ZIP + 4 address is a USPS delivery point.

First Class Mail

First Class Mail





Standard Mail

Standard Mail


Correcting potential addressing issues can reduce the amount of undeliverable-as-addressed (UAA) pieces, which in turn will result in more efficient mail processing and delivery. The DPV® Product identifies whether a ZIP + 4® coded address is currently represented in the USPS® delivery file as a known address record. The DPV® Product allows users to confirm known USPS® addresses as well as identify potential addressing issues that may hinder delivery.

What does DPV® do?

The DPV® Product confirms that:

  • The known address has verifiable primary and secondary data.
  • The known address has verifiable primary but not secondary data.
  • The address cannot be verified as a known address.

The DPV® Product does not append any missing data or correct any address elements.

To become a licensed DPV® provider, applicant must be or in the process of becoming a CASS™ software manufacturer.

Annual License Fee: $11,500.00*

* The initial licensing year is prorated.

What's next?

Once you have decided to apply to become a DPV® licensee, the next step is to complete the certification process. The process includes the completion of the following documentation:

  • Application
  • Confidentiality Statement
  • Self-Certification Survey
  • Key Personnel Listing
  • Equipment/Software Product Information

Upon completion of these documents, the license must be executed, including the payment of licensing fees.

Featured Resources

Applications/ Forms
Licensing and Certification Key Personnel Form for DPV®

This document contains information on licensing and certification key personnel Form for DPV®.

Applications/ Forms
DPV® Product Interface Application (PDF)

This document contains the product interface application form for the DPV® product.

Contact Lists
DPV® Licensees

This document provides a contact list of licensees for DPV®.

Applications/ Forms
DPV® License Agreement

This document contains the License Agreement for DPV®.

Fact Sheets
Licensing Fees

This document contains information about licensing fees for USPS® Licensed Products.

Modifications to DPV® License and Supporting Documents

This document lists modifications to the DPV® license agreement and supporting documents.

Tech Guides
Advertising Technical Guide

Advertising technical guide for licensed products.

Quick Service Guides
DPV®, DSF2®, CASS™ Grading Requirements

This document contains grading requirements for DPV®, DSF2®, and CASS™ products.

User Guides
DPV® Product Licensee Performance Requirements

This document provides product licensee performance requirements for DPV®.

Quick Service Guides
How to obtain Public Seeds Records

This document contains a guide to obtaining public record seeds.

Related Products


DSF is an approved method outlined in the Domestic Mail Manual for sequencing mail pieces in walk-sequence when not using a simplified address.


For more information about DPV® or the licensing and certification process, please call the Move Update Support Department at 1-800-589-5766.