E.164 Country Calling Code
United States +1
Official telecommunications routing registry for United States. International dialing prefix is +1. Browse all regional numbering plan area codes below.
Current Local Time
23:37:22
America/New_York • UTC -04:00
Full Dialing Format
+1 (XXX) XXX-XXXX
International Prefix
+1
🌐
ISO Jurisdiction
US
MAP
Total Area Codes
439
⚡
Standard
ITU-T E.164
📜
⭐ Major Area Codes in United States
🗄️ All Numbering Plan Area Codes (NPA)
Select an area code to view local exchange registries, carrier mappings, and geographic zones
270
Kentucky
272
Pennsylvania
274
Wisconsin
276
Virginia
279
California
281
Texas
283
Ohio
289
Ontario
301
Maryland
302
Delaware
303
Colorado
304
West Virginia
305
Florida
306
Saskatchewan
307
Wyoming
308
Nebraska
309
Illinois
312
Chicago, IL
313
Michigan
314
Missouri
315
New York
316
Kansas
317
Indiana
318
Louisiana
319
Iowa
320
Minnesota
321
Florida
323
California
324
Florida
325
Texas
326
Ohio
327
Arkansas
329
New York
330
Ohio
331
Illinois
332
New York, NY
334
Alabama
336
North Carolina
337
Louisiana
339
Massachusetts
341
California
343
Ontario
3452
Cayman Islands
3457
Cayman Islands
346
Texas
347
New York
350
California
351
Massachusetts
352
Florida
353
Wisconsin
