Nameprep is a coding procedure for the normalization of domain names. Capital letters to small letters and that are converted "“ss"” as equivalent fixed "“ss"” too "“ss"” (from road for example road becomes). While the introduction was only introduced by Punycode (transformation of non-ASCII characters in Umlautdomains) (1. March 2004), took place the normalization from capital letters for a long time. Therefore it unimportant also whether into URL took place the use from capital letters or whether it was generally smallwritten.

With IDNA domains afterwards still another conversion of the university code URL takes place with the help of the Punycode procedure into a so-called ACE stringer (ASCII Compatible Encoding).

Related links

• RFC 3491 - Nameprep: A Stringprep of profiles for Internationalized Domain Names (IDN)

Articles in category "Nameprep"

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• A new Request for Comments is now available in online RFC ...
  RFC 3491 Title: Nameprep: A Stringprep Profile for Internationalized Domain Names (IDN) Author(s): P. Hoffman, M. Blanchet Status: Standards Track Date: ...


• Nameprep - Wikipedia, the free encyclopedia
  Nameprep is the process of Unicode NFKC normalization, case-folding, mapping lookalike characters together, and elimination of restricted codepoints applied ...


• NamePrep Test
  NamePrep Test. Show UTF. 가힣


• Nameprep/IDNA/Stringprep
  A Nameprep revision might be able to address this issue. ... The current versions of Nameprep, IDNA and Stringprep reference Unicode 3.2.0. ...


• Network Working Group A. Costello Request for Comments: 3492 Univ ...
  For the details of the prefix and constraints, see [IDNA] and [NAMEPREP]. Punycode is an instance of a more general algorithm called Bootstring, ...


• Network Working Group P. Hoffman Request for Comments: 3491 IMC ...
  Hoffman & Blanchet Standards Track [Page 1] RFC 3491 IDN Nameprep March 2003 - The mappings ... Implementations of Nameprep MUST fully implement Stringprep. ...