The name was reserved by the Internet Engineering Task Force (IETF) in RFC 2606 (June 1999) and is not intended to ever be installed into the global Domain Name System (DNS) of the Internet.[1][2] Because neither test nor any of its subdomains can be registered, they can be used for testing purposes without fear of conflicts with current or future domain names. Another 11 test domains are: .测试, .परीक्षा, .испытание, .테스트, .טעסט, .測試, .آزمایشی, .பரிட்சை, .δοκιμή, .إختبار, .テスト.[3]