Principles for Unicode Code Point Inclusion in Labels in the DNS | Zendy

Andrew Sullivan | Zendy; Dave Thaler | Zendy; J. Klensin | Zendy; Olaf Kolkman | Zendy

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Principles for Unicode Code Point Inclusion in Labels in the DNS

Author(s) -

Andrew Sullivan,

Dave Thaler,

J. Klensin,

Olaf Kolkman

Publication year - 2013

Publication title -

citeseer x (the pennsylvania state university)

Language(s) - English

Resource type - Reports

DOI - 10.17487/rfc6912

Subject(s) - unicode , code (set theory) , point (geometry) , computer science , domain (mathematical analysis) , set (abstract data type) , domain name , range (aeronautics) , programming language , information retrieval , world wide web , artificial intelligence , mathematics , engineering , geometry , mathematical analysis , the internet , aerospace engineering

Internationalized Domain Names in Applications (IDNA) makes availableto DNS zone administrators a very wide range of Unicode code points.Most operators of zones should probably not permit registration ofU-labels using the entire range. This is especially true of zones thataccept registrations across organizational boundaries, such as top-level domains and, most importantly, the root. It is unfortunately notpossible to generate algorithms to determine whether permitting a codepoint presents a low risk. This memo presents a set of principles thatcan be used to guide the decision of whether a Unicode code point maybe wisely included in the repertoire of permissible code points in aU-label in a zone.

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