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Telephone Numbers and Area Codes

411 Locate: White, Yellow, and Reverse Number Lookup
AllPages.com: Online Yellow Pages
Anywho
Area Code Maps
Area Decoder: Area Code Lookup Service
Business Search
Country and City Telephone Codes
Intellius Land and Cell phone
International Calling Codes
International Telephone Directories
Sullr USA: Reverse Landline Lookup
Toll-Free Number Search
Telephone Directories on the Web
Telephone Prefix Location Directory
Search by prefix to find where a telephone is located. There is a maximum of 5 lookups in a 48 hour period."
White Pages.com
White and yellow pages searches plus reverse number and address lookups.

Global Yellow Pages

Postal and Zip Codes

Addressing Formats for International Mail
Canada Postal Code Look-Up
Customer's Guide to Mailing -- United States Postal Service
International Addresses and Salutations
Official USPS Abbreviations -- United States Postal Service
Postal Rates.info
POSTINFO: World Postal Information
Zip Code Lookup & Address Information -- United States Postal Service
Zip Code Database

This page was last updated on May 27, 2008.