Area code 401

Area code 401 is the telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Rhode Island. 401 is one of the original North American area codes, which were established in 1947.

Area code 401 is not projected to exhaust its supply of vacant central office codes until 2055.^[1]

References

^ "2024-1 NRUF and NPA Exhaust Analysis" (PDF). nationalnanpa.com. April 2024. Retrieved July 6, 2024.

"Area Code Maps". North American Numbering Plan Administrator.

Rhode Island area codes: 401
	North: 508/774
West: 860/959	401	East: 508/774
	South: 631/934
Connecticut area codes: 203/475, 860/959
Massachusetts area codes: 413, 508/774, 617/857, 781/339, 978/351
New York area codes: 212/332/646, 315/680, 363/516, 518/838, 585, 607, 631/934, 624/716, 347/718/929, 329/845, 914, 917

v t e Lists of area codes in the North American Numbering Plan
United States	Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah U.S. Government Vermont Virginia Washington West Virginia Wisconsin Wyoming American Samoa Guam Northern Marianas Puerto Rico U.S. Virgin Islands
Other	Canada Caribbean
Former	Belize Costa Rica Cuba El Salvador Guatemala Haiti Honduras Mexico Nicaragua Panama

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