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现发布根系统稳定性调查研究最终报告

洛杉矶 – 2017 年 3 月 8 日 – 互联网名称与数字地址分配机构 (ICANN) 于今日发布了针对数据驱动型根服务器系统稳定性长期分析 (CDAR) 的最终报告。这项调查研究了新 gTLD 项目在新 gTLD 授权方面对根区域名系统 (DNS) 的安全性和稳定性产生的技术影响,并参考了公开可用的历史衡量数据。

阅读报告 [PDF, 3.49 MB]。

这项 CDAR 研究由独立研究机构 TNO 及其合作伙伴 SIDNNLnet Labs 共同开展。调查结果将帮助 ICANN 社群继续推进工作,确定如果在根区系统中加入更多 TLD 是否需要采取额外的措施。

2016 年 10 月 27 日发布了报告草案以征询意见。今天发布的经修改的最终版本纳入了公共评议期收到的意见和建议。修改的内容包括有关所用数据的额外讨论以及原始报告中提出的建议。此外,还根据报告草案发布后获得的数据对报告草案中提出的某些分析结果进行了更新。这份公共评议报告 [PDF, 520 KB] 于 2017 年 2 月 9 日发布,囊括了针对调查结果而获得的公众意见摘要和分析。

ICANN 根据政府咨询委员会 (GAC) 的建议委托开展了这项调查,目的旨在研究授权新 gTLD 对根区 DNS 系统的安全性或稳定性造成的技术影响。最终报告预计会为社群开展有关根区未来扩展的讨论提供信息。调查结果和建议也将呈交 ICANN 董事会,供其考量。

新 gTLD 项目审核

自 2013 年 10 月首次发放授权以来,ICANN 的新 gTLD 项目已经向互联网根区引入了几百个新顶级域。这项 CDAR 研究是对当前正在开展的项目进行的一系列综合审核的一部分,这些项目涉及多个领域,包括:竞争、消费者信任和选择;安全性和稳定性;权利保护以及其他领域。

ICANN 简介

ICANN 的使命在于确保全球互联网的稳定、安全与统一。要与其他互联网用户联系,您必须在自己的计算机中输入地址 — 可以是一个名称或是一串数字。这个地址必须独一无二,只有这样电脑之间才能互相识别。ICANN 则负责协调并支持这些分布在全球各地的唯一标识符。ICANN 成立于 1998 年,是一家非营利公益型机构,其社群成员遍布全球各地。ICANN 及其社群一直致力于确保互联网的安全、稳定和可互操作。此外,ICANN 还提倡竞争,制定有关互联网顶级域命名系统的政策,便于全世界用户使用其他唯一互联网标识符。详情请访问: www.icann.org


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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."