Dialing United States (+1) made simple.
The +1 prefix opens every line in the United States — from a Manhattan trading desk to a Bay Area startup. Here's the verified country code, ISO references, live local time, and Ringflow's direct US routes.
The United States by the numbers.
The geography, NANP codes and time-zone spread you need before your first call into the US market.
United States country information
Every route into American lines.
Landline, calling card or business VoIP — the +1 prefix reaches all 50 states plus US territories. Pick the channel that matches your call volume.
Direct calls using landlines & mobile phones
Dial United States directly from any landline or mobile by entering your international exit code, then the country code +1, and finally the local number.
International calling cards for United States
Pre-paid international calling cards remain a convenient, low-cost way to reach United States. Each card gives you a PIN and an access number to place global calls.
VoIP services for contacting United States
VoIP apps like Skype, WhatsApp and Viber — and business VoIP from Ringflow — route calls to United States over the internet, usually at far lower rates than traditional carriers.
What shapes US voice traffic, coast to coast.
The fundamentals behind calls to and from the United States — the +1 code, the capital, six mainland time zones and the NANP plan.
How to call the United States.
A US number is built from four parts under the North American Numbering Plan. Here's the anatomy and dialling order.
Number anatomy
Start with the exit prefix
Press + on a mobile (hold the 0 key), or dial 00 from most countries, or 011 from North America.
Add the United States code
Dial +1. This identifies United States on the global telephone network.
Enter the area or mobile prefix
Type the first part of the local number. Drop the leading 0 if there is one.
Finish with the subscriber number
The remaining digits route the call to the specific line in Washington, D.C. or elsewhere.
Dialling United States (+1) from other countries
The exit prefix changes by origin; the United States code stays +1.
| Calling from | Exit prefix | You dial, then the national number |
|---|---|---|
| United Kingdom & most of Europe | 00 | 00 1 |
| Australia | 0011 | 0011 1 |
| Japan | 010 | 010 1 |
| Any mobile (E.164) | + | +1 |
Browse the full country code index.
Search by country name, ISO code or dial prefix. Click any country for its dialing rules and Ringflow's local number availability.
FAQ
Calling the United States, answered.
What businesses and travellers ask most before dialling the US on +1.
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Dialling United States without misdialling
United States’s calling code is +1 , which puts it in the North American Numbering Plan — the United States, Canada and 20-odd Caribbean territories, all sharing +1. The codes below are the ones a caller actually reaches by mistake, so they are worth checking before a number goes into a CRM or an outbound list.
| Dial this by mistake | and you reach | Why it happens |
|---|---|---|
| +1-684 | American Samoa | A longer code that begins with +1 |
| +1-264 | Anguilla | A longer code that begins with +1 |
| +1-268 | Antigua and Barbuda | A longer code that begins with +1 |
| +1-242 | Bahamas | A longer code that begins with +1 |
+1 is not unique to United States. Canada use it too, so the calling code alone does not identify the destination — the digits after it do. Rate cards and routing rules that key on +1 alone will treat all of these as one destination.
Other Americas countries in the same numbering zone: Anguilla +1-264, Antigua and Barbuda +1-268, Bahamas +1-242, Barbados +1-246, Bermuda +1-441. United States's capital is Washington, D.C..