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  2. Postal address verification - Wikipedia

    en.wikipedia.org/wiki/Postal_address_verification

    The standardized address is then compared against the entire list of valid addresses in the Address Management System to determine if it is a valid address. Address validity is based on many different factors, including address renumbering (via the USPS Locatable Address Conversion System) and address completeness. If an exact match is not ...

  3. Locatable Address Conversion System - Wikipedia

    en.wikipedia.org/wiki/Locatable_Address...

    Locatable Address Conversion System (LACS) is a service offered by the United States Postal Service to update mailing addresses when a street is renamed or the address is updated for 911. In the case of 911, the address is changed from a rural route format to an urban/city route format.

  4. National Change of Address - Wikipedia

    en.wikipedia.org/wiki/National_Change_of_Address

    National Change of Address (NCOALink) is "a secure dataset of approximately 160 million permanent change-of-address (COA) records consisting of the names and addresses of individuals, families and businesses who have filed a change-of-address with the USPS". [1] It is a postal address verification system maintained by the United States Postal ...

  5. Address Management System - Wikipedia

    en.wikipedia.org/wiki/Address_Management_System

    Address Management System (AMS) is the United States Postal Service master database of deliverable addresses. Address-checking tools using AMS provide address standardization, as well as city/state and ZIP Code lookup features. [1] Business mailers use the USPS Address Management System:⁠-⁠[e correct ZIP Codes.

  6. Coding Accuracy Support System - Wikipedia

    en.wikipedia.org/wiki/Coding_Accuracy_Support_System

    The Coding Accuracy Support System (CASS) enables the United States Postal Service (USPS) to evaluate the accuracy of software that corrects and matches street addresses.CASS certification is offered to all mailers, service bureaus, and software vendors that would like the USPS to evaluate the quality of their address-matching software and improve the accuracy of their ZIP+4, carrier route ...

  7. United States Postal Service - Wikipedia

    en.wikipedia.org/wiki/United_States_Postal_Service

    Postal address verification tools and services are offered by the USPS and third-party companies to help ensure mail is deliverable by fixing formatting, appending information such as ZIP Code and validating the address is a valid delivery point. Customers can look up ZIP Codes and verify addresses using USPS Web Tools available on the official ...

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