Every number type in United States with real format examples: how numbers are written domestically, how to dial them from abroad, and the E.164 form your systems should store.
Right now in United States
--:--
United States spans 29 time zones; showing America/New_York.
Country code
+1
Trunk prefix
1
Intl. call prefix
011
Mobile digits
10
Number formats by type
Examples from the official numbering plan metadata. The E.164 column is the normalized form for databases and APIs.
Type
Domestic (national)
From abroad
E.164
Digits
Landline
1 (201) 555-0123
+1 (201) 555-0123
+12015550123
10
Mobile
1 (201) 555-0123
+1 (201) 555-0123
+12015550123
10
Toll-free
1 (800) 234-5678
+1 (800) 234-5678
+18002345678
10
Premium rate
1 (900) 234-5678
+1 (900) 234-5678
+19002345678
10
How to call United States
From abroad: dial +1 (or your country's exit code, e.g. 00 from Europe, 011 from North America), then the national number without the leading 1. Example: +1 (201) 555-0123
Within United States: dial the number as written domestically, including the trunk prefix 1. Example: 1 (201) 555-0123
Calling abroad from United States: the international prefix is 011, or simply use + on mobiles.
Storing numbers in software: always store E.164 (+12015550123): unambiguous, sortable, and what SMS and telephony APIs expect.
Exact dial sequence from your country
Pick where you are calling from and get the digit-for-digit sequence for a United States number, with your country's exit code instead of the generic +.
Dial exactly
Frequently Asked Questions
What is the phone number format in United States?
Numbers in United States use country code +1. A mobile number looks like 1 (201) 555-0123 domestically, or +1 (201) 555-0123 in international format (E.164: +12015550123). Mobile numbers have 10 national digits.
How do I call United States from abroad?
Dial your country's international prefix (or +), then 1, then the national number without the leading 1. Example: +1 (201) 555-0123.
What is the country calling code for United States?
The country calling code for United States is +1. To call abroad from United States, the international prefix is 011 (or use +).
Cookies, the honest version. We would like to use Google Analytics to see which pages help people. Nothing is set until you say yes, and every tool works exactly the same either way. Privacy Policy