US Phone Number Generator
Generate random US phone numbers for testing. Choose between formatted, dashes-only, digits-only, or international format.
How to Generate Test Phone Numbers
Step 1: Choose Format
Select your preferred phone number format: formatted with parentheses, dashes only, digits only, or international E.164 format.
Step 2: Set Quantity
Specify how many phone numbers you need. Generate up to 50 numbers at once for batch testing or database seeding.
Step 3: Generate and Copy
Click generate to create new numbers, then copy all with one click. Each number uses a valid US area code.
About US Phone Numbers
US phone numbers follow the North American Numbering Plan (NANP) format: a 3-digit area code, 3-digit exchange code, and 4-digit subscriber number.
Our generator uses real US area codes and follows NANP rules (exchange codes cannot start with 0 or 1) to create valid-looking numbers for testing.
Common Formats
- (555) 123-4567 - Standard formatted
- 555-123-4567 - Dashes only
- 5551234567 - Digits only
- +1 555 123 4567 - International
Frequently Asked Questions
Are these real phone numbers?
No. While they follow valid US phone number formats with real area codes, the numbers are randomly generated. Never use them for actual communication or SMS sending in production.
Can I use these for SMS verification testing?
These are for testing phone number input validation, not SMS delivery. For SMS testing, use services like Twilio Test Credentials or similar that provide test phone numbers with actual SMS capabilities.
Why do you use real area codes?
Using real area codes helps catch validation bugs. Some applications validate that area codes exist, so using fake area codes might not trigger the same code paths as production traffic.
What format should I use for testing?
Test multiple formats to ensure your application handles variations. Users enter phone numbers in many ways. A robust application should accept all common formats.
How do I validate phone numbers in my app?
Use libraries like libphonenumber (Google's phone parsing library) which validate format, country codes, and number structure. Simple regex validation misses many edge cases.
Best practices for phone testing
- Test all common input formats your users might enter
- Validate both US and international numbers if applicable
- Test invalid numbers (too short, too long, invalid area codes)
- Ensure phone fields accept pasted numbers
- Test formatting on blur vs. real-time formatting
- Verify database storage format matches display format needs