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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 covers the entire state and has been in service since 1947. See the list of central office prefixes and the transition to ten-digit dialing.
3 ημέρες πριν · 603 is an area code in New Hampshire, US, serving Manchester and other cities and counties. Find out the current time, time zone offset, daylight saving time and location map of the 603 area code.
Find out the location, time zone, and cities served by area code 603 in New Hampshire. See the map, phone lookup, and NXX analysis for 603 area code.
1 Οκτ 2024 · Area Code 603 covers 163 cities and 10 counties in New Hampshire, with a population of 1,377,529. It has no overlay, no prefix assignment issues, and a single time zone of Eastern (GMT -05:00).
Area Code 603 - New Hampshire. Cities in Area Code 603.
Find out the location, time zone and phone number prefixes of area code 603, which covers the entire state of New Hampshire. Learn the history, major cities and how to perform a 603 area code lookup.
Area code 603 covers Dover and other parts of New Hampshire, established in 1947. Learn about the major cities, history, and fun facts of this region with the area code 603 guide.
