---
id: "idna2008"
kind: "glossary-term"
title: "IDNA2008"
language: "en"
category: "DNS and technical foundations"
updated: "2026-10-04T14:01:23Z"
canonical: "https://tldlog.com/glossary/idna2008/"
translations:
  es: "https://tldlog.com/es/glosario/idna2008/"
  de: "https://tldlog.com/de/glossar/idna2008/"
  fr: "https://tldlog.com/fr/glossaire/idna2008/"
  it: "https://tldlog.com/it/glossario/idna2008/"
  pt-BR: "https://tldlog.com/pt/glossario/idna2008/"
  ru: "https://tldlog.com/ru/glossariy/idna2008/"
  zh-Hans: "https://tldlog.com/zh/cihui/idna2008/"
---

# IDNA2008

Internationalized Domain Names for Applications, 2008 revision

The current technical standard for internationalized domain names. It defines which Unicode characters may appear in a domain name and how names are converted to and from their ASCII form. It replaced the 2003 version, and a few characters are handled differently between the two.

## related terms

- [IDN](https://tldlog.com/glossary/idn/)
- [Punycode](https://tldlog.com/glossary/punycode/)
- [A-label](https://tldlog.com/glossary/a-label/)
- [U-label](https://tldlog.com/glossary/u-label/)
- [Universal Acceptance](https://tldlog.com/glossary/universal-acceptance/)