JP
Japan
ISO 3166 Country Code
Asia
Country Codes
Alpha-2 Code (ISO 3166-1 alpha-2)
JP
Alpha-3 Code (ISO 3166-1 alpha-3)
JPN
Numeric Code (ISO 3166-1 numeric)
392
Common Usage
HTML lang attribute
<html lang="jp">
URL locale parameter
https://example.com/jp/
JavaScript/TypeScript
const country = "JP"; const countryName = "Japan";
API Response (JSON)
{
"country": "JP",
"countryName": "Japan",
"alpha3": "JPN",
"numeric": "392"
}ISO 3166 Standard
ISO 3166 is the international standard for country codes. The alpha-2 code (JP) is the most commonly used format for domain names, language tags, and internationalization. The alpha-3 code (JPN) is used in shipping, banking, and official documents. The numeric code (392) is language-independent and useful for systems with character encoding limitations.