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.yu was the Internet country code top-level domain (ccTLD) that was assigned to Yugoslavia and was mainly used by the Federal Republic of Yugoslavia and its successor Serbia and Montenegro between 1994 and 2010. After Serbia and Montenegro acquired separate .rs and .me domains in 2007, a transition period started, and the .yu domain finally expired on 30 March 2010. yu is the most heavily used top-level domain ever to be deleted. ==History== The .yu ccTLD was assigned originally to the Socialist Federal Republic of Yugoslavia, during the government project for the development of scientific-technological information (SNTIJ). The official registrants were the University of Maribor and the Jožef Stefan Institute, which were located in Slovenia. When SFR Yugoslavia dissolved Slovenia and Croatia registered their own ccTLDs (.si and .hr). Serbia and Montenegro formed the Federal Republic of Yugoslavia, but was under international sanctions at the time because of ongoing Yugoslav wars. The old .yu domain registry had been left in Slovenia, and the domain became a succession matter when the Slovenians refused to relinquish the domain name to the University of Belgrade in Serbia, which had requested they do so. In 1994, the Internet Assigned Numbers Authority finally decreed that the domain should pass to FR Yugoslavia. After that, the domain was managed by the YUNET Association, an organization based in the Faculty of Electrical Engineering at the University of Belgrade. FR Yugoslavia renamed itself Serbia and Montenegro in February 2003. The code YU was replaced by CS in July 2003 following the official name change, and the ccTLD .cs was reserved for Serbia and Montenegro after the name change. However, .cs was never actually used, and .yu remained one of the few ccTLDs that did not correspond to a current ISO 3166-1 two-letter code. The state union of Serbia and Montenegro was dissolved in July 2006, and in September 2006, ISO accordingly proposed the replacement the codes RS for Serbia and ME for Montenegro. On 26 September 2006 the ISO 3166 Maintenance Agency agreed on the change of ISO 3166-1 Alpha-2 code CS to RS. The new domains .rs for Serbia and .me for Montenegro became active shortly thereafter. In September 2007 ICANN resolved〔(Preliminary Report for Special Meeting of the ICANN Board of Directors ) ICANN, 11 September 2007〕 that the .yu domain would be operated temporarily under the Serbian National Register of Internet Domain Names, operators of the new .rs domain registry. A two-year transition period started, and the .yu domain was scheduled to expire on 30 September 2009. However, the Serbian registrar requested an extension and ICANN decided to extend the transition deadline another six months away. Finally, the Serbian registrar declared the end of the .yu domain at 12:00 CEST on 30 March 2010.〔 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「.yu」の詳細全文を読む スポンサード リンク
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