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ICANN Publishes RSSAC2 Review Survey for Community Input

LOS ANGELES – 27 November 2017 – Interisle, the independent examiner conducting the second review of the ICANN Root Server System Advisory Committee (RSSAC2), is launching a survey to collect input from those who have interacted with RSSAC and/or have ideas for ways to improve it. Please share your input by taking the survey found at this link: The survey will close on 20 December 2017.


A periodic review of the RSSAC is mandated by ICANN Bylaws Section 4.4 "Periodic Review of ICANN Structure and Operations".

The RSSAC plays a critical role within ICANN, advising the ICANN community and Board on matters related to the operation, administration, security, and integrity of the Internet's Root Server System. It communicates on matters relating to the operation of the Root Servers and their multiple instances with the Internet technical community and the ICANN community. The RSSAC gathers and articulates requirements to offer to those engaged in technical revision of the protocols and best common practices related to the operation of Domain Name System servers, as well as ongoing threat assessment and risk analysis of the Root Server System, among other related activities.

Next Steps

Following the close of the survey, the independent examiner will analyze survey responses received along with input received via interviews at ICANN60, IETF100, and other forums, as input into its assessment report, to be posted in February 2018.

RSSAC Resources


ICANN's mission is to ensure a stable, secure and unified global Internet. To reach another person on the Internet, you need to type an address – a name or a number – into your computer or other device. That address must be unique so computers know where to find each other. ICANN helps coordinate and support these unique identifiers across the world. ICANN was formed in 1998 as a not-for-profit public-benefit corporation with a community of participants from all over the world.

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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."