United States is +1
A local writes 212 555 0123 — the dialer below turns that into what you press.
The US anchors the North American Numbering Plan: 1 doubles as country code and long-distance prefix, there is no trunk zero, and 011 opens an international line. Unusually, nothing in a number says mobile — area codes are geographic for both. The 555 0100 to 0199 block in any area code is reserved for fiction, hence 212 555 0123.
Ten digits as area code plus seven, with no mobile-specific ranges — cell and landline look identical.
You dial
2125550123
Domestic call — dialed exactly as written. From any mobile, +1 2125550123 works worldwide.
Type the number the way a local writes it — the arithmetic is derived from each country's ITU plan.
Plan facts verified against ITU-T E.164 assigned country codes · North American Numbering Plan — Wikipedia. Prose is our own.
Plugs & voltage by Plugchord
Trip cardHeading there? The trip card has the plugs, dates and money too.Also on +1
- American Samoa684
- Anguilla264
- Antigua and Barbuda268
- Bahamas242
- Barbados246
- Bermuda441
- British Virgin Islands284
- Canada
- Cayman Islands345
- Dominica767
- Dominican Republic809
- Grenada473
- Guam671
- Jamaica876
- Montserrat664
- Puerto Rico787
- Saint Kitts and Nevis869
- Saint Lucia758
- Saint Vincent and the Grenadines784
- Trinidad and Tobago868
- Turks and Caicos Islands649
- United States Virgin Islands340