Phone Number Validator
ValidatorValidate and parse phone numbers from around the world. Get formatted output and carrier information.
Bulk Validation
What is This Tool?
A phone number validator checks if phone numbers are correctly formatted according to international standards. Validate numbers against country-specific rules, detect the carrier type (mobile/landline), identify the country, and format numbers in E.164, national, and international formats.
Phone number validation goes beyond simple regex: it checks country-specific length rules, valid area codes, number type (mobile, landline, toll-free), and carrier assignment. The ITU E.164 standard defines the international format: + country code + subscriber number, max 15 digits.
Common Use Cases
Form Validation
Validate phone number inputs in registration forms, contact forms, and profile pages before storing or sending SMS.
Data Quality
Clean and validate phone numbers in imported contact lists, CRM databases, and mailing lists.
SMS Gateway Integration
Validate and format numbers to E.164 before sending to Twilio, Vonage, or other SMS providers to reduce delivery failures.
Fraud Detection
Identify VoIP, prepaid, and virtual numbers that may indicate higher fraud risk in transaction verification.
Frequently Asked Questions
What validation checks are performed?
Country code validity, correct length for the country, valid area/prefix codes, number type detection, and E.164 formatting compliance.
Can I detect mobile vs landline?
Yes. Based on the number prefix and country rules, the validator identifies whether a number is mobile, landline, VoIP, toll-free, or premium rate.
What is E.164 format?
The international standard: + followed by country code and subscriber number, no spaces or dashes. Example: +14155552671. Maximum 15 digits.