Qualified Address API

Qualified Address
From their site: Verify addresses on any website form. Great for validating shipping addresses before mailing a product or adding +4 Codes to addresses as they are entered onto your website. JavaScript or XML Versions available. Address verification against U.S. Postal Service� (USPS�) file, down to the Apt/Suite level. Accesses CASS-certified software.
Mapping, Addresses, Mapping, USA
C#, Java, PHP, HTML & Microsoft Access example code included
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