Validate phone numbers

Overview #

The tool helps you standardize your contact list. A valid format does not prove that a number is in service or can receive your message.

Features #

• E.164 Formatting: Converts phone numbers to the international E.164 format
• Validation: checks whether a number matches the expected numbering format. It does not check whether the number is active or can receive messages.
• Country Detection: Determines the country of origin for each number
• Type Classification: Identifies whether numbers are mobile, landline, or VoIP
• Timezone Information: Shows the timezone associated with each number

Default region setting #

The default region setting tells the system which country to use when processing phone numbers without a country code.

How it works:

• Numbers with a country code, such as +1 or +44, are interpreted using that country code. They must still pass the format checks.
• Numbers without a country code use your selected default region to determine the country

Examples:

• If you enter “+1 555-123-4567” → Always formatted as “+15551234567” (US) regardless of default region
• If you enter “555-123-4567” with US as default region → Formatted as “+15551234567”
• If a number has no country code, choose the country it actually belongs to. Selecting a different country can produce an invalid or incorrect result.

How to use #

1. Enter your phone numbers in the Input column
   • Numbers can be in any format (local, with/without country code, with spaces or symbols)
   • Example formats: (212) 555-1234, +44 7700 900123, 6175550123
2. Click the Format & Validate button
3. Review the results:
   • Output: Shows the E.164 formatted number (if valid)
   • Valid: Indicates whether the number is valid (Yes/No)
   • Status: Shows validation status or error message
   • Country: Shows the detected country
   • Type: Shows if the number is mobile, landline, or VoIP
   • Timezone: Shows the timezone for the number

Frequently asked questions #