%% You should probably cite rfc6912 instead of this I-D. @techreport{iab-dns-zone-codepoint-pples-00, number = {draft-iab-dns-zone-codepoint-pples-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-iab-dns-zone-codepoint-pples/00/}, author = {Andrew Sullivan and Dave Thaler and Dr. John C. Klensin and Olaf Kolkman}, title = {{Principles for Unicode Code Point Inclusion in Labels in the DNS}}, pagetotal = 11, year = 2012, month = jun, day = 12, abstract = {IDNA makes available to DNS zone administrators a very wide range of Unicode code points. Most operators of zones should probably not permit registration of U-labels using the entire range. This is especially true of zones that accept registrations from outside parties, including (and most importantly) the root. It is unfortunately not possible to generate algorithms to determine whether a code point is intrinsically safe to permit. This memo presents a set of principles that can be used to guide the decision of whether a Unicode code point may be wisely included in the repertoire of permissible code points in a U-label in a zone.}, }