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Area code 603 is the sole area code for the U.S. state of New Hampshire in the North American Numbering Plan (NANP). It was created as one of the original 86 numbering plan areas in October 1947.
- Area code 603 - Simple English Wikipedia, the free encyclopedia
Area code 603 is an area code for New Hampshire. It was one...
- Area code 603 - Simple English Wikipedia, the free encyclopedia
Vor einem Tag · 603 is an area code in New Hampshire, US, serving Manchester and other cities and counties. Learn about its location, time zone, map and daylight saving time.
- UTC/GMT -4:00 hours
- EDT
- UTC/GMT -5:00 hours
Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes.
CodeTerritory Or UseDate200not in use; available for non-geographic ...easily recognizable code (ERC)New Jersey ( Bergen County and Hudson ...19471947Southwestern Connecticut ( Bridgeport, ...1947This is a list of North American telephone area codes in effect for the North American Numbering Plan (NANP). The area to which an area code is officially assigned is known as a Numbering Plan Area (NPA). An area code is part of a telephone number in the United States, Canada, and the Caribbean.
Wirefly provides information about area code 603, which serves New Hampshire since 1947. Find out the cities, ZIP codes, carriers, and usage types for this area code.
- New Hampshire
- Eastern (GMT -05:00)
1. Mai 2024 · Area Code 603 is located in New Hampshire. It covers 163 cities, including Manchester, Nashua, Concord, Dover, and Rochester. It also covers 10 counties, including Hillsborough County, Rockingham County, Grafton County, Merrimack County, and Strafford County.
