By state, province or country: United States | Canada | Caribbean and Bermuda
Numbering Plan: Current system | Dialing plans | Charges | History | Calls to Mexico (until 1991) | Expansion of area codes | Splits and overlays | Expansion issues | Decrease in expansion rate | Alphabetic mnemonic system | Cellular services and the NANP numbering scheme | New area codes | Fictional telephone numbers | Future expansion of NANP | Special numbers and codes | List of NANPA countries and territories
By state, province or country: United States | Canada | Caribbean and Bermuda
Numbering Plan: Current system | Dialing plans | Charges | History | Calls to Mexico (until 1991) | Expansion of area codes | Splits and overlays | Expansion issues | Decrease in expansion rate | Alphabetic mnemonic system | Cellular services and the NANP numbering scheme | New area codes | Fictional telephone numbers | Future expansion of NANP | Special numbers and codes | List of NANPA countries and territories