- Federal Express
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National Address Server
Given a valid U.S. postal address, this server attempts to rewrite the address in the proper format along with the ZIP+4 code. - United Parcel Service [UPS]
- United States Postal Service [USPS]
- USPS Official Postal Abbreviations
- USPS Postal Rates
- Zip+4 Code Lookup
page last updated 6/19/2013 1:53 PM