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RSSAC Caucus

The Caucus of DNS and root server system experts will be responsible for the essential work of the RSSAC. More information about the Caucus – including its purpose, principles, and procedures – can be reviewed here [PDF, 72 KB].

On 10 July 2014, the RSSAC appointed the initial members of the Caucus. The public Statement of Interest for every Caucus member may be viewed here.

Joe Abley Alejandro Acosta Anupam Agrawal
Mehmet Akcin Jaap Akkerhuis Adiel Akplogan
Roy Arends Fred Baker Ray Bellis
Ramanou Biaou Rao Naveed Bin Rais Marc Blanchet
John Bond Anand Buddhdev Jim Cassell
Bobby Cates Bruce Crabill John Crain*
João Damas Kim Davies Brian Dickson
Elise Gerich Ray Gilstrap* Shailesh Gupta
Wes Hardaker* John Heidemann Ashley Heineman
Paul Hoffman Hiro Hotta* Shumon Huque
Kevin Jones* Daniel Karrenberg* Howard Kash*
Akira Kato Shane Kerr Ramet Khalili
Hank Kilmer* Mark Kosters Suresh Krishnaswamy
Warren Kumari* Pan Lanlan Matt Larson
Dave Lawrence Lars-Johan Liman* Peter Losher
Declan Ma Terry Manderson* Bill Manning
Jim Martin Robert Martin-Legène George Michaelson
Daniel Migault* Keith Mitchell Paul Muchene
Russ Mundy* Jun Murai* Tomofumi Okubo
Colin Petrie Anand Raje Kaveh Ranjbar*
Brian Reid* Karl Reuss Shinta Sato
Yuji Sekiya Arturo Servin Sofia Silva Berenguer
Tripti Sinha* Mukund Sivaraman Gerry Sneeringer*
Davey Song William Sotomayor Ryan Stephenson*
Robert Story Ondřej Surý Mahdi Taghizadeh
Brad Verd* Paul Vixie* Zheng Wang
Wang Wei Matt Weinberg* Duane Wessels*
Suzanne Woolf* Kevin Wright* Zhiwei Yan
Romeo Zwart   * = RSSAC Member


The RSSAC Caucus meets periodically in person at IETF meetings and ICANN meetings. Minutes from these meetings can be reviewed here.

Membership Committee

In November 2013, the RSSAC formed the Membership Committee to oversee the process of admitting new Caucus members. The Membership Committee consists of:

  • Matt Weinberg, Chair
  • Jim Martin, Member
  • Paul Vixie, Member
  • Brad Verd, Ex Officio Member

How to Join

To apply for membership in the Caucus, interested applicants should submit a Statement of Interest to the Membership Committee at

The Statement of Interest should include:

  • Name
  • Affiliation and current position
  • Relevant qualifications
  • Motivation for membership in the Caucus
  • Indication of availability
  • Formal roles and interests in the work of RSSAC
  • Links where appropriate
Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as"""" is not an IDN."