How US phone numbers are formatted
US numbers use the North American Numbering Plan: a three-digit area code, a three-digit exchange and a four-digit line number, written as (212) 555-0147 or +1 212-555-0147 internationally.
Each landline uses the real area code of a city such as New York, Los Angeles, Chicago, so numbers look exactly like those your users will type.
How to use it
- The country is already set to United States — adjust the other options if needed.
- Press Generate for a fresh batch.
- Copy single results or export everything as CSV, JSON or TXT.
Want results from other countries? Open the Random Phone Number Generator to mix all 40 countries.
Frequently asked questions
What is the country code for the United States?
The international dialling code for the United States is +1.
Can I call these US numbers?
Please don’t — they are generated randomly and may belong to real subscribers. Use them only for testing and design.
Can I call these numbers?
Please don’t. They are randomly generated and may belong to real people. Use them only for testing and display purposes.
What is E.164 format?
E.164 is the international standard: a plus sign, the country code and the subscriber number with no spaces, e.g. +442079460958. Most SMS and telephony APIs require it.