US Phone Number Generator
USAGenerate realistic US phone numbers with valid area codes. Includes options for different states, mobile/landline formats, and toll-free numbers.
Settings
US Phone Format
Format: NPA-NXX-XXXX
NPA (Area Code): 3 digits (2-9 for first digit)
NXX (Exchange): 3 digits (2-9 for first digit)
XXXX (Subscriber): 4 digits
Popular Area Codes
Toll-Free Prefixes
What is This Tool?
A US phone number generator creates realistic fictional American phone numbers following the North American Numbering Plan (NANP) format. Numbers use valid area codes, correct (XXX) XXX-XXXX formatting, and exclude reserved ranges like 555 and 800 toll-free prefixes.
The NANP assigns 10-digit numbers with a 3-digit area code and 7-digit local number. Area codes cannot start with 0 or 1, and exchange codes (first 3 digits of local number) follow the same rule. This generator produces numbers with valid area codes mapped to correct US states and regions.
Common Use Cases
SMS/Voice Testing
Test Twilio, Vonage, and other telephony API integrations with properly formatted US phone numbers.
Contact Form Validation
Validate phone input masks, formatting logic, and area code detection in web and mobile forms.
CRM Data Population
Seed customer databases with realistic US phone numbers for testing contact management and call logging.
2FA/MFA Testing
Test two-factor authentication phone registration flows with format-correct US numbers.
Frequently Asked Questions
Can I receive calls at generated numbers?
No. Generated numbers are fictional. For end-to-end testing, use Twilio test credentials or virtual phone number services.
Are area codes real?
Yes. Numbers use valid, assigned NANP area codes mapped to correct US geographic regions.
What format options are available?
Numbers can be output as (XXX) XXX-XXXX, XXX-XXX-XXXX, +1XXXXXXXXXX (E.164), or raw 10 digits.