Free Phone Number Validation
Check a number’s country code, length and prefix against its country’s numbering plan.
Valid format
- Phone number
- +977 984-1234567
- Country
- Nepal
- International format
- +9779841234567
- Format check
- Matches the numbering plan
A valid format does not confirm that the number is active or belongs to a user.
How It Works
- 01
Enter a phone number
Include the country code, such as +1 or +44.
- 02
Validate the number
Select Validate number to check its format and numbering rules.
- 03
Review the result
See the validation result and international format, or the reason the number failed.
Frequently Asked Questions
What does phone number validation check?
Validation checks a number’s country code, length, and prefix against its country’s numbering rules. It can also return the number in international format.
Does a valid result mean the number is active?
No. A number can match a valid numbering range without being assigned or active. Checking whether it is reachable requires a separate check.
Can this verify that a user owns the number?
No. Format validation does not verify ownership. Sending a one-time code and checking the user’s response can confirm that they have access to the number.
Why might a phone number be invalid?
The number may have an incorrect country code, too many or too few digits, or a prefix that does not match the country’s numbering plan. Check for typing errors and include the country code.
How should I enter the number?
Start with + and the country code, followed by the number. For example, +1 415 555 0123. This form accepts spaces, parentheses, dots, and hyphens.
What is international phone number format?
International format starts with +, followed by the country calling code and the national number. It lets a number be represented consistently across countries.
Does validation identify mobile, landline, or VoIP numbers?
That is a separate check. Use the phone type checker for the line type, or the carrier checker for the phone company.
Verify phone numbers with OTP
Send an OTP and check the code to confirm a user has access to their number.