Area code 425 is a telephone area code in the North American Numbering Plan (NANP) for the suburbs north and east of Seattle in the U.S. state of Washington. The numbering plan area includes the Eastside, extending east to North Bend, north to Everett, and south to Maple Valley. It also includes the cities of Bellevue and Redmond, both major employment centers. The area code was created in 1997 in a three-way split of area code 206.