Check whether a U.S. Virgin Islands number is valid, detect its line type, and convert it to E.164, international, or national format — instantly and free. Powered by Google's libphonenumber.
| Country | U.S. Virgin Islands (VI) |
| Country calling code | +1 |
| Example number (international) | +1 340 642 1234 |
| National format | (340) 642-1234 |
| E.164 format | +13406421234 |
| RFC 3966 (tel: URI) | tel:+13406421234 |
| Example line type | fixed line or mobile |
To dial a U.S. Virgin Islands number from abroad, start with the country code +1 followed by the national subscriber number. In E.164 — the format every SMS gateway, CRM, and payment provider expects — the same number is stored as +13406421234: a leading +, the country code, and the national number with no spaces or separators.
The interactive tool above runs entirely in your browser. For server-side validation at scale — sign-up forms, lead cleaning, SMS routing — call the API. One GET request, no SDK, works in any language.
# Validate a U.S. Virgin Islands number via the API curl "https://phone-validation-and-formatting.p.rapidapi.com/v1/validate?number=%2B13406421234" \ -H "X-RapidAPI-Key: YOUR_KEY" \ -H "X-RapidAPI-Host: phone-validation-and-formatting.p.rapidapi.com"
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The country calling code for U.S. Virgin Islands is +1. A full number in international (E.164) form looks like +13406421234.
A typical U.S. Virgin Islands fixed line or mobile number is written +1 340 642 1234 internationally, (340) 642-1234 nationally, or +13406421234 in E.164 format.
Send one GET request to the Phone Validation API with the number and country code "VI". The response tells you whether it is valid, the line type, and every standard format. A free tier is available.
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