Vorwahlen

Nordamerikanischer Nummerierungsplan: jede US- und Kanada-Vorwahl mit Stadt, Bundesstaat und Zeitzone. 51 aktive NPA-Codes.

Alberta

• 780 — Edmonton

British Columbia

• 604 — Vancouver
• 778 — Vancouver

California

• 213 — Los Angeles
• 310 — West Los Angeles, Beverly Hills
• 415 — San Francisco, Marin County
• 424 — West Los Angeles
• 510 — Oakland, Berkeley
• 619 — San Diego
• 858 — San Diego

Colorado

• 303 — Denver
• 720 — Denver

Connecticut

• 203 — New Haven, Bridgeport, Stamford

DC

• 202 — Washington

Florida

• 305 — Miami
• 407 — Orlando
• 813 — Tampa

Georgia

• 404 — Atlanta

Hawaii

• 808 — Honolulu

Illinois

• 312 — Chicago
• 773 — Chicago

Maryland

• 443 — Baltimore

Massachusetts

• 617 — Boston
• 857 — Boston

Michigan

• 313 — Detroit

Minnesota

• 612 — Minneapolis

Missouri

• 314 — St. Louis

Nevada

• 702 — Las Vegas

New Jersey

• 201 — Jersey City, Hackensack

New York

• 212 — Manhattan
• 315 — Syracuse
• 516 — Long Island
• 646 — Manhattan
• 718 — Brooklyn, Queens, Bronx, Staten Island
• 917 — New York City

Ohio

• 216 — Cleveland

Ontario

• 416 — Toronto
• 613 — Ottawa
• 905 — Mississauga, Hamilton, Niagara

Oregon

• 503 — Portland

Pennsylvania

• 215 — Philadelphia
• 412 — Pittsburgh

Quebec

• 418 — Quebec City
• 438 — Montreal
• 514 — Montreal

Texas

• 214 — Dallas
• 469 — Dallas
• 713 — Houston
• 832 — Houston

Virginia

• 703 — Arlington, Northern Virginia

Wisconsin

• 608 — Madison