Phone Number Validator
Validate international phone numbers and detect country, format in E.164, national, and international forms.
International phone numbers follow the E.164 standard: a leading + followed by country code (1–3 digits) and subscriber number (up to 15 digits total). Country codes like +1 (US/Canada), +44 (UK), +61 (Australia), and +91 (India) prefix all international numbers. The national format omits the country code but may include trunk prefixes (like 0 in the UK). For reliable cross-border communication, always use the E.164 format which is universally parseable by telecommunications systems.
Frequently Asked Questions
- International format (+1-800-555-1234), US format (800-555-1234), no-punctuation (8005551234), and international without plus (+442079460958).
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