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.uk is the Internet country code top-level domain (ccTLD) for the United Kingdom of Great Britain and Northern Ireland. , it is the fourth most popular top-level domain worldwide (after .com, .de and .net), with over 10 million registrations. In October 1984, RFC 920 set out the creation of ccTLDs generally using country codes derived from the corresponding two-letter code in the ISO 3166-1 list. ''GB'' is the UK's ISO 3166 country code. However, the .uk domain had been created separately a few months before the compilation of the ISO-derived list. Consequently, .gb was never widely used and it is no longer possible to register under that domain. New registrations directly under .uk have been accepted by Nominet since 10 June 2014 08:00 BST, however there is a reservation period for existing customers who already have a .co.uk, .org.uk, .me.uk, .net.uk, .ltd.uk or .plc.uk domain to claim the corresponding .uk domain, which runs until 07:59 BST on 10 June 2019.〔(【引用サイトリンク】title=.uk domain dates and definitions )〕 .uk has used OpenDNSSEC since March 2010. == History == As with other ccTLDs in the early days it was originally delegated to an individual by Jon Postel. In time, it passed to Dr Willie Black at the UK Education and Research Networking Association (UKERNA). Originally, domain requests were emailed, manually screened by and then forwarded to the UK Naming Committee before being processed by UKERNA. Membership of this committee was restricted to a group of high-end ISPs who were part of a formal peering arrangement. The Naming Committee was organised as a mailing list to which all proposed names were circulated. The members would consider the proposals under a ruleset that insisted that all domain names should be very close if not identical to a registered business name of the registrant. Members of the Naming Committee could object to any name, and if at least a small number of objections were received, the name was refused. By the mid-1990s the growth of the Internet, and particularly the advent of the World Wide Web was pushing requests for domain name registrations up to levels that were not manageable by a group of part-time voluntary managers. Oliver Smith of Demon Internet forced the issue by providing the committee with a series of automated tools, called the "automaton", which formalised and automated the naming process end to end. This allowed many more registrations to be processed far more reliably and rapidly, and inspired individuals such as Ivan Pope to explore more entrepreneurial approaches to registration. Various plans were put forward for the possible management of the domain, mostly Internet service providers seeking to stake a claim, each of which were naturally unacceptable to the rest of the committee. In response to this Dr Black, as the .uk Name, stepped up with a bold proposal for a not-for-profit commercial entity to deal with the .uk domain properly. Commercial interests initially balked at this, but with widespread support Nominet UK was formed in 1996 to be the .uk Network Information Centre, a role which it continues to this day. The general form of the rules (i.e. which domains can be registered and whether to allow second level domains) was set by the Naming Committee. Nominet has not made major changes to the rules, although it has introduced a new second level domain .me.uk for individuals. Until 10 June 2014 it was prohibited to register a domain name directly under .uk (such as ''internet.uk'') and a third-level domain was used (such as ''internet.co.uk''). However, some domains delegated before the creation of Nominet UK remain. Examples include ''mod.uk''〔(【引用サイトリンク】title=Ministry of Defence - GOV.UK )〕 (Ministry of Defence), ''parliament.uk''〔(【引用サイトリンク】title=www.parliament.uk Home page )〕 (Parliament), ''bl.uk''〔(【引用サイトリンク】title=THE BRITISH LIBRARY - The world's knowledge )〕 and ''british-library.uk''〔(【引用サイトリンク】title=THE BRITISH LIBRARY - The world's knowledge )〕 (the British Library), ''nls.uk''〔(【引用サイトリンク】title=National Library of Scotland )〕 (the National Library of Scotland), ''nhs.uk''〔(【引用サイトリンク】title=NHS Choices - Your health, your choices )〕 (The National Health Service), and ''jet.uk''〔(【引用サイトリンク】title=JET Index Page )〕 (UKAEA as operator of the Joint European Torus experimental fusion tokamak). No new 'normal' registrations at the second level are accepted although there is a system for allocating new second level domains to expand the capacity of the system. Such allocations are rarely made. Currently the rights to the .uk domain name are owned by Nominet UK. It is possible to directly register a domain name with Nominet UK, but it is faster and cheaper to do it via a Nominet registrar. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「.uk」の詳細全文を読む スポンサード リンク
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