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What is ASCII and what are ASCII vs. Non-ASCII characters in domains?


ASCII, pronunciado ask-ii , significa American Standard Code for Information Interchange. ASCII foi baseado no alfabeto inglês e consiste em 128 caracteres incluindo A-Z, 0-9, pontuação, espaços e outros códigos de controle que podem ser encontrados em um teclado inglês padrão. Esses 128 caracteres são então atribuídos a um número de 0 a 127 para representá-los na transferência de dados de um computador para outro. Embora o código ASCII tenha sido originalmente desenvolvido para teletipoas (um dispositivo usado para enviar e receber mensagens), ele encontrou uma aplicação mais ampla com o desenvolvimento de computadores pessoais.

ASCII and Non-ASCII Characters in Domain Names


ASCII domains, much like ASCII in general, is based on the English alphabet. These domains are limited to only include the following characters: A-Z, 0-9, and dashes (-). Other types of punctuation, spaces, etc. are not allowed for these domains. ASCII domains are much more prevalent than non-ASCII character domains currently as non-ASCII domains were only just recently made available for public registration (around 2010).

Exemplos de Caracteres ASCII Usados em Domínios
Exemplos comuns de caracteres ASCII usados em domínios.

  • .com
  • .org
  • .xyz
  • .co

Non-ASCII domains are commonly referred to as Internationalized Domain Names (IDNs). More recently, international domain extensions have also become available in a variety of languages and scripts. These types of domains allow for a much larger variety of characters to be included, which opens up the Internet to more people around the world through accessibility and use of other languages. In short, non-ASCII domains are not confined strictly to ASCII characters (A-Z, 0-9, and dashes), they allow for wide variety of unique characters.

Examples of Non-ASCII Characters
Examples of non-ascii characters used in international domain extensions:

  • भारत (usado para sites na Índia)
  • 网络 (equivalente a .NET na China)
  • .קום (equivalente a .COM em hebraico)
  • .இந்தியா (significa Índia em tâmil, um idioma falado em muitas partes da Índia)


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