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Root Zone Evolution Review Committee (RZERC) Representatives

Appointing Organization	Name	Statement of Interest	Term	Appointment Documents / Links
Internet Engineering Task Force (IETF)	Tim April (Chair)	SOI	2020-2021 2021-2022 2022-2023	IETF 2020 Appointment Confirmation IETF 2021 Appointment Confirmation IETF 2022 Appointment Confirmation IETF Appointment Procedure
Address Supporting Organization (ASO)	Carlos Martinez	SOI	2016-2019 2019-2022	ASO 2016 Appointment Confirmation ASO 2019 Appointment Confirmation
Country Code Names Supporting Organization (ccNSO)	Peter Koch	SOI	2016-2019 2019-2022 2022-2025	ccNSO 2016 Appointment Confirmation ccNSO 2019 Appointment Confirmation
ICANN Board	Wes Hardaker	-	2023 - Present	ICANN Board 2023 Appointment Confirmation
Public Technical Identifiers (PTI)	Kim Davies	SOI	No term limits	PTI 2018 Appointment Confirmation
Registries Stakeholder Group of the Generic Names Supporting Organization (RySG)	Kalina Ostalska	SOI
Root Server System Advisory Committee (RSSAC)	Daniel Migault	SOI	2020-2022 2022-2024	RSSAC 2020 Appointment Confirmation RSSAC 2022 Appointment Confirmation RSSAC Appointment Procedure
Security and Stability Advisory Committee (SSAC)	Geoff Huston	SOI	2020–2022 2023-2025	SSAC 2019 Appointment Confirmation SSAC 2022 Appointment Confirmation SSAC Appointment Procedure
Verisign as the Root Zone Maintainer (RZM)	Duane Wessels	SOI	2016 - Present No term limits.	Verisign 2016 Appointment Confirmation Verisign 2018 Appointment Clarification

Support Team

Affiliation	Name	Title
ICANN Org	Steve Sheng	Senior Director Policy Development Support
ICANN Org	Danielle Rutherford	Policy and Technology Manager

Previous RZERC Members

Appointing Organization	Name	Statement of Interest	Term	Appointment Documents / Links
SSAC	Russ Mundy	SOI	2016-2019	SSAC 2018 Appointment Confirmation
RSSAC	Brad Verd	SOI	2016-2018 2018-2020	RSSAC 2016 Appointment Confirmation RSSAC 2018 Appointment Confirmation RSSAC 2019 Appointment Confirmation RSSAC Appointment Procedure
IETF	Jim Reid	SOI	2016–2017 2017-2018 2018-2019 2019-2020	IETF 2016 Appointment Confirmation IETF 2017 Appointment Confirmation IETF 2018 Appointment Confirmation IETF 2019 Appointment Confirmation IETF Appointment Procedure
Registries Stakeholder Group of the Generic Names Supporting Organization (RySG)	Howard Eland	SOI	2016-2019 2019-2022	RySG 2016 Appointment Confirmation RySG 2018 Appointment Confirmation RySG 2019 Appointment Confirmation
ICANN Board	Kaveh Ranjbar	SOI	2016-2022	ICANN Board 2016 Appointment Confirmation

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""icann.org"" is not an IDN."