Area code 401 is the sole telephone area code in the North American Numbering Plan (NANP) for the U.S. stateofRhode 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]
| North: 508/774 | ||
| West: 860/959 | area code 401 | East: 508/774 |
| South: 631/934 | ||
| Connecticut area codes: 203/475, 860/959 | ||
| Massachusetts area codes: 339/781, 351/978, 413, 508/774, 617/857 | ||
| New York area codes: 212/332/646, 315/680, 347/718/929, 363/516, 518/838, 585, 607, 631/934, 624/716, 329/845, 914, 917 | ||
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