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INTERNATIONAL CALLING CODES

United States city and number prefixes

Search documented cities, regions and telephone prefixes. These are numbering references, not numbers available to buy.

All international calling codes
United StatesCountry calling code: +1

100 of 29106 documented prefixes

  • Norwich, NYCity / region number prefixes
    Number prefix607337International: +1607337
  • Norwich, VTCity / region number prefixes
    Number prefix802649International: +1802649
  • Norwood, COCity / region number prefixes
    Number prefix970327International: +1970327
  • Norwood, MACity / region number prefixes
    Number prefix781255International: +1781255
  • Norwood, MACity / region number prefixes
    Number prefix781278International: +1781278
  • Norwood, MACity / region number prefixes
    Number prefix781551International: +1781551
  • Norwood, MACity / region number prefixes
    Number prefix781762International: +1781762
  • Norwood, MACity / region number prefixes
    Number prefix781769International: +1781769
  • Norwood, NCCity / region number prefixes
    Number prefix704474International: +1704474
  • Novato, CACity / region number prefixes
    Number prefix415209International: +1415209
  • Novato, CACity / region number prefixes
    Number prefix415382International: +1415382
  • Novato, CACity / region number prefixes
    Number prefix415878International: +1415878
  • Novato, CACity / region number prefixes
    Number prefix415883International: +1415883
  • Novato, CACity / region number prefixes
    Number prefix415884International: +1415884
  • Novato, CACity / region number prefixes
    Number prefix415892International: +1415892
  • Novato, CACity / region number prefixes
    Number prefix415895International: +1415895
  • Novato, CACity / region number prefixes
    Number prefix415897International: +1415897
  • Novato, CACity / region number prefixes
    Number prefix415898International: +1415898
  • Novato, CACity / region number prefixes
    Number prefix415899International: +1415899
  • Novelty, OHCity / region number prefixes
    Number prefix440338International: +1440338
  • Novi, MICity / region number prefixes
    Number prefix248305International: +1248305
  • Novi, MICity / region number prefixes
    Number prefix248344International: +1248344
  • Novi, MICity / region number prefixes
    Number prefix248347International: +1248347
  • Novi, MICity / region number prefixes
    Number prefix248374International: +1248374
  • Novi, MICity / region number prefixes
    Number prefix248380International: +1248380
  • Novi, MICity / region number prefixes
    Number prefix248449International: +1248449
  • Novi, MICity / region number prefixes
    Number prefix248465International: +1248465
  • Novi, MICity / region number prefixes
    Number prefix248662International: +1248662
  • Nowata, OKCity / region number prefixes
    Number prefix918273International: +1918273
  • Noxon, MTCity / region number prefixes
    Number prefix406847International: +1406847
  • Nucla, COCity / region number prefixes
    Number prefix970864International: +1970864
  • Nunda, NYCity / region number prefixes
    Number prefix585468International: +1585468
  • Nutley, NJCity / region number prefixes
    Number prefix973235International: +1973235
  • Nutley, NJCity / region number prefixes
    Number prefix973284International: +1973284
  • Nutley, NJCity / region number prefixes
    Number prefix973542International: +1973542
  • Nutley, NJCity / region number prefixes
    Number prefix973661International: +1973661
  • Nutley, NJCity / region number prefixes
    Number prefix973667International: +1973667
  • Nyack, NYCity / region number prefixes
    Number prefix845348International: +1845348
  • Nyack, NYCity / region number prefixes
    Number prefix845353International: +1845353
  • Nyack, NYCity / region number prefixes
    Number prefix845358International: +1845358
  • Nyssa, ORCity / region number prefixes
    Number prefix541372International: +1541372
  • O'Fallon, ILCity / region number prefixes
    Number prefix618624International: +1618624
  • O'Fallon, ILCity / region number prefixes
    Number prefix618632International: +1618632
  • O'Fallon, MOCity / region number prefixes
    Number prefix636240International: +1636240
  • O'Fallon, MOCity / region number prefixes
    Number prefix636272International: +1636272
  • O'Fallon, MOCity / region number prefixes
    Number prefix636281International: +1636281
  • O'Fallon, MOCity / region number prefixes
    Number prefix636294International: +1636294
  • O'Fallon, MOCity / region number prefixes
    Number prefix636379International: +1636379
  • O'Fallon, MOCity / region number prefixes
    Number prefix636978International: +1636978
  • O'Fallon, MOCity / region number prefixes
    Number prefix636980International: +1636980
  • O'Neill, NECity / region number prefixes
    Number prefix402336International: +1402336
  • Oak Brook, ILCity / region number prefixes
    Number prefix630368International: +1630368
  • Oak Brook, ILCity / region number prefixes
    Number prefix630571International: +1630571
  • Oak Brook, ILCity / region number prefixes
    Number prefix630572International: +1630572
  • Oak Brook, ILCity / region number prefixes
    Number prefix630573International: +1630573
  • Oak Brook, ILCity / region number prefixes
    Number prefix630574International: +1630574
  • Oak Brook, ILCity / region number prefixes
    Number prefix630575International: +1630575
  • Oak Brook, ILCity / region number prefixes
    Number prefix630928International: +1630928
  • Oak Brook, ILCity / region number prefixes
    Number prefix630954International: +1630954
  • Oak Brook, ILCity / region number prefixes
    Number prefix630990International: +1630990
  • Oak Creek, WICity / region number prefixes
    Number prefix414570International: +1414570
  • Oak Creek, WICity / region number prefixes
    Number prefix414571International: +1414571
  • Oak Creek, WICity / region number prefixes
    Number prefix414764International: +1414764
  • Oak Creek, WICity / region number prefixes
    Number prefix414768International: +1414768
  • Oak Forest, ILCity / region number prefixes
    Number prefix708535International: +1708535
  • Oak Forest, ILCity / region number prefixes
    Number prefix708687International: +1708687
  • Oak Grove, KYCity / region number prefixes
    Number prefix270439International: +1270439
  • Oak Grove, KYCity / region number prefixes
    Number prefix270640International: +1270640
  • Oak Grove, LACity / region number prefixes
    Number prefix318428International: +1318428
  • Oak Grove, MOCity / region number prefixes
    Number prefix816625International: +1816625
  • Oak Grove, MOCity / region number prefixes
    Number prefix816690International: +1816690
  • Oak Harbor, OHCity / region number prefixes
    Number prefix419898International: +1419898
  • Oak Harbor, WACity / region number prefixes
    Number prefix360240International: +1360240
  • Oak Harbor, WACity / region number prefixes
    Number prefix360257International: +1360257
  • Oak Harbor, WACity / region number prefixes
    Number prefix360279International: +1360279
  • Oak Harbor, WACity / region number prefixes
    Number prefix360675International: +1360675
  • Oak Harbor, WACity / region number prefixes
    Number prefix360679International: +1360679
  • Oak Hill, OHCity / region number prefixes
    Number prefix740682International: +1740682
  • Oak Hill, WVCity / region number prefixes
    Number prefix304465International: +1304465
  • Oak Hill, WVCity / region number prefixes
    Number prefix304469International: +1304469
  • Oak Island, NCCity / region number prefixes
    Number prefix910278International: +1910278
  • Oak Lawn, ILCity / region number prefixes
    Number prefix708346International: +1708346
  • Oak Lawn, ILCity / region number prefixes
    Number prefix708636International: +1708636
  • Oak Lawn, ILCity / region number prefixes
    Number prefix708684International: +1708684
  • Oak Lawn, ILCity / region number prefixes
    Number prefix708857International: +1708857
  • Oak Park, ILCity / region number prefixes
    Number prefix708358International: +1708358
  • Oak Park, ILCity / region number prefixes
    Number prefix708383International: +1708383
  • Oak Park, ILCity / region number prefixes
    Number prefix708386International: +1708386
  • Oak Park, ILCity / region number prefixes
    Number prefix708445International: +1708445
  • Oak Park, ILCity / region number prefixes
    Number prefix708524International: +1708524
  • Oak Park, ILCity / region number prefixes
    Number prefix708660International: +1708660
  • Oak Park, ILCity / region number prefixes
    Number prefix708763International: +1708763
  • Oak Park, ILCity / region number prefixes
    Number prefix708848International: +1708848
  • Oak Park, MICity / region number prefixes
    Number prefix248968International: +1248968
  • Oak Ridge, TNCity / region number prefixes
    Number prefix865220International: +1865220
  • Oak Ridge, TNCity / region number prefixes
    Number prefix865425International: +1865425
  • Oak Ridge, TNCity / region number prefixes
    Number prefix865481International: +1865481
  • Oak Ridge, TNCity / region number prefixes
    Number prefix865482International: +1865482
  • Oak Ridge, TNCity / region number prefixes
    Number prefix865483International: +1865483
  • Oak View, CACity / region number prefixes
    Number prefix805649International: +1805649

Area codes identify dialing regions. More detailed number prefixes identify allocated ranges and may include subscriber digits. City coverage varies by country; a prefix does not establish a subscriber’s current location or available numbers.

National numbering planNumbering reference