Communication in United States: By phone

U.S. telephone numbers are invariably written in one of these formats The numbers YYY-ZZZZ make up the local part of the telephone number; you must dial all seven digits even if the YYY is the same as the line you are calling from. Read More »

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Communication in United States: By phone is based on United States by W. Lane Startin, Peter Budny, Dale Arnett, Jim Nicholson, Jonathan Pinkerton, Graham87, LtPowers, Coolcaesar, iGuide and others. Travel guides are available under Creative Commons Attribution-ShareAlike 3.0. See background image credits.