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  1. Service Objects
  2. Products
  3. Address Validation - US
    • Do you support APO/FPO/DPO detection and validation?
    • What advantages are there to using Address Validation-US versus the USPS?
    • What are the steps for integrating the API for Address Validation - US?
    • Can you tell me if an address is residential, business or commercial?
    • Do you have an Address Autocomplete or Address Suggestion product?
    • Why does Address Validation - US tell me an address is not deliverable but Google Maps says it exists?
    • What does CASS Certified mean?
    • What does DPV mean?
    • Coming up with test data for Address Validation - US is a pain, can you help?
    • Do you have sample API code for Address Validation - US?
    See more

    What does CASS Certified mean?

    CASS stands for Coding Accuracy Support System and is used by the United States Postal Service (USPS) to evaluate the accuracy of software that validates and correct US mailing addresses.  

    The USPS requires annual testing of our address validation software and requires a 98.5% accuracy rating based on 150,000 difficult addresses provided by USPS to receive CASS certification.  We are proud to say that we have scored above 99% in each of the last 10 years.

    You can read more about CASS and the certification process here and directly from the USPS here.

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