Check whether a South Korea 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 | South Korea (KR) |
| Country calling code | +82 |
| Example number (international) | +82 10 2000 0000 |
| National format | 010-2000-0000 |
| E.164 format | +821020000000 |
| RFC 3966 (tel: URI) | tel:+821020000000 |
| Example line type | mobile |
To dial a South Korea number from abroad, start with the country code +82 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 +821020000000: 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 South Korea number via the API curl "https://phone-validation-and-formatting.p.rapidapi.com/v1/validate?number=%2B821020000000" \ -H "X-RapidAPI-Key: YOUR_KEY" \ -H "X-RapidAPI-Host: phone-validation-and-formatting.p.rapidapi.com"
Get a free API key → · 1,000 free requests/month, no credit card.
The country calling code for South Korea is +82. A full number in international (E.164) form looks like +821020000000.
A typical South Korea mobile number is written +82 10 2000 0000 internationally, 010-2000-0000 nationally, or +821020000000 in E.164 format.
Send one GET request to the Phone Validation API with the number and country code "KR". The response tells you whether it is valid, the line type, and every standard format. A free tier is available.
Validity, line-type detection, and every format from a single endpoint — 240+ countries, sub-50ms from the edge.
Start free →