2009/Nov/10 DNSOP@IETF-76 new TLD name rules

Top Level Domain Name Specification

draft-liman-tld-names-01

Lars-Johan Limanliman@autonomica.se

Represented by

Olafur Gudmundsson

2009/Nov/10 DNSOP@IETF-76 new TLD name rules

Background

• RFC1123: TLD names are “alphabetic” – [A-Za-z]+

• IDN names start with: “xn—” – Not allowed as TLD name

• Work started in DNS Directorate– IANA would like technical rules to follow for

new TLD’s.

2009/Nov/10 DNSOP@IETF-76 new TLD name rules

Proposed new TLD rules:

• tldlabel = traditional-tld-label / idn-label– traditional-tld-label = 1*63(ALPHA)– idn-label = Restricted-A-label– ALPHA = %x41-5A / %x61-7A ; A-Z / a-z– L = Ll / Lm / Lo / Lt / Lu

• Ll = Lowercase-Letter• Lm = Modifier-Letter• Lo = Other-Letter• Lt = Titlecase-Letter• Lu = Uppercase-Letter

• L rule from– http://tools.ietf.org/html/draft-ietf-idnabis-defs-12

2009/Nov/10 DNSOP@IETF-76 new TLD name rules

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