Validating addresses usps
The Address Information System (AIS) Products Technical Guide contains documentation on all AIS products, including Residential Delivery Indicator (RDI), Z4Change, ZIPMove, Zip 4, Five-Digit Zip Product, e LOT, Carrier Route Product, City State Product, and Delivery Statistics Product.
Passwords must be at least 8 characters in length and include at least one uppercase letter, one lowercase letter, and one number.Only a city that is "preferred" or "acceptable" is recognized as standard.These systems attempt to correct incorrect city names and any that cannot be corrected are rejected. This means that it must have a street, city, state and 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.