Phone numbers · US
United States phone number format
United States numbers use the country code +1. A mobile number looks like (201) 555-0123 at home and +12015550123 in international E.164 format.
| Type | Example (national) | International | E.164 | Digits |
|---|---|---|---|---|
| Mobile | (201) 555-0123 | +1 201-555-0123 | +12015550123 | 10 |
| Landline | (201) 555-0123 | +1 201-555-0123 | +12015550123 | 10 |
| Toll-free | (800) 234-5678 | +1 800-234-5678 | +18002345678 | 10 |
| Premium-rate | (900) 234-5678 | +1 900-234-5678 | +19002345678 | 10 |
| Personal (forwarding) number | (500) 234-5678 | +1 500-234-5678 | +15002345678 | 10 |
- Country calling code
- +1
- National (trunk) prefix
- 1
- International call prefix
- 011
- Separate VoIP range
- No
- Time zones
- America/Adak, America/Anchorage, America/Anguilla, America/Antigua, America/Barbados, America/Boise, America/Cayman, America/Chicago, America/Denver, America/Dominica, America/Edmonton, America/Fort_Nelson, America/Grand_Turk, America/Grenada, America/Halifax, America/Jamaica, America/Juneau, America/Los_Angeles, America/Lower_Princes, America/Montserrat, America/Nassau, America/New_York, America/North_Dakota/Center, America/Phoenix, America/Port_of_Spain, America/Puerto_Rico, America/Regina, America/Santo_Domingo, America/St_Johns, America/St_Kitts, America/St_Lucia, America/St_Thomas, America/St_Vincent, America/Toronto, America/Tortola, America/Vancouver, America/Winnipeg, Atlantic/Bermuda, Pacific/Guam, Pacific/Honolulu, Pacific/Pago_Pago, Pacific/Saipan
Validate in code
Check a United States number.
Send the number as typed plus country: "US". You get it back in E.164 with its line type, ready to store.
curl https://veqen-app.com/v1/phone/check \
-H "Authorization: Bearer $VEQEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{"country": "US", "phone": "(201) 555-0123"}'import os, requests
r = requests.post(
"https://veqen-app.com/v1/phone/check",
headers={"Authorization": f"Bearer {os.environ['VEQEN_API_KEY']}"},
json={"country": "US", "phone": "(201) 555-0123"},
timeout=10,
)
result = r.json()
print(result["risk"]["verdict"], result["risk"]["reasons"])const res = await fetch("https://veqen-app.com/v1/phone/check", {
method: "POST",
headers: {
Authorization: `Bearer ${process.env.VEQEN_API_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({"country": "US", "phone": "(201) 555-0123"}),
});
const result = await res.json();
console.log(result.risk.verdict, result.risk.reasons);Questions
United States numbers
What is the country code for United States?
+1. Dial it after your international access code, or use +1 from a mobile phone.
How do I format a United States phone number in E.164?
Drop the national prefix (1) and add +1. For example (201) 555-0123 becomes +12015550123.
How many digits is a United States mobile number?
10 digits after the country code.
Does United States have VoIP phone numbers?
There is no separate VoIP range in the numbering plan, so VoIP numbers look like ordinary numbers.