Validating addresses usps
AIS Viewer is an interactive application, which includes the following AIS products: City/State Product, County Name Retrieval, Delivery Statistics Retrieval, ZIP 4® Retrieval, and Address Lookup.The application provides the ability to retrieve, view, and print hardcopy reports, on demand.If an exact match is not found, an acceptable alternative is used (if available).If the address is valid, it is assigned a ZIP 4 code something like this: 12344-5678, where the first five digits are the ZIP code and the trailing four digits are the delivery range.However, if the USPS has the address listed as "VACANT", it is not delivered, even though the address is valid.
CASS-certified software accepts as standard any "preferred" or "acceptable" city for a five-digit ZIP Code.
According to the United States Postal Service, an address is valid (or mailable) if it is CASS-certified, meaning that it exists within the comprehensive list of mailable addresses in their Address Management System.
This is different from the credit card Address Verification System (AVS), which is the method used by credit card processors to authenticate ownership of a credit card by verifying that the account on the credit card matches the billing address on file.
AIS Viewer is updated monthly and the data is valid for 105 days from the product (monthly) cycle date. The following report/product options are available on the AIS Viewer application: The Address Lookup function is free with the purchase of at least one of the four other AIS Viewer products, which are priced separately, allowing mailers the flexibility to customize the AIS Viewer to their needs.
The annual subscription price is based on the product(s) ordered, and includes 12 monthly updates.
Whenever possible, addresses that are incomplete have the missing information added.