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We are responsible for global coordination of the Internet Protocol addressing systems, as well as the Autonomous System Numbers used for routing Internet traffic.

Currently there are two types of Internet Protocol (IP) addresses in active use: IP version 4 (IPv4) and IP version 6 (IPv6). IPv4 was initially deployed on 1 January 1983 and is still the most commonly used version. IPv4 addresses are 32-bit numbers often expressed as 4 octets in “dotted decimal” notation (for example, 192.0.2.53). Deployment of the IPv6 protocol began in 1999. IPv6 addresses are 128-bit numbers and are conventionally expressed using hexadecimal strings (for example, 2001:0db8:582:ae33::29).

Both IPv4 and IPv6 addresses are generally assigned in a hierarchical manner. Users are assigned IP addresses by Internet service providers (ISPs). ISPs obtain allocations of IP addresses from a local Internet registry (LIR) or National Internet Registry (NIR), or from their appropriate Regional Internet Registry (RIR):

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高陵區政府公布了事故原因的初步調查結果,造成當事人死亡的直接原因是電梯維修方陝西凱文機電設備有限公司工作人員在維修電梯時工作存在嚴重過失,沒有打開轎廂檢查就切斷了電源,停電後沒有確認電梯內是否有人被困,導致吳某某死亡。 在這575萬輛機動車中,目前新能源車只有2萬輛,而老舊機動車,其中包括國一、國二標準機動車及重型柴油車卻還有很大比重。統計,2014年,北京擁有國一及以下汽柴油車39.1萬輛,國二汽柴油車58萬輛,佔全市560萬輛機動車保有量的17.3%。av电影 【報告】統籌考慮職工平均工資增長率和物價漲幅等因素,2016年1月1日起,按6.5%左右提高企業和機關事業單位退休人員養老金標準,並向退休較早、養老金偏低的退休人員和艱苦邊遠地區企業退休人員適當傾斜;建立基本工資正常調整機制,促進在職和退休人員待遇水平協調增長。亚洲av 隨著紀檢體制改革的不斷深入,紀委“干什麼”“依據什麼干”“怎麼干”等問題逐步厘清,定位更加清晰、職責更加明確、機制更加完善,建立起一支對黨忠誠、嚴格履職、敢于擔當、守住底線的紀檢干部隊伍。 外交部發言人洪磊表示,中國在西沙群島上部署國土防御設施,不是什麼新的事情,這與所謂的南海“軍事化”沒有關系。希望有關國家不要進行無謂或別有用心的炒作,多做有利于地區和平穩定的事。av视频 借鑒國外的例子,在中心和擁堵城區停車費都會遠遠高于其余周邊地區,以調控車輛使用,讓車主盡可能采取公交出行。8月13日,中紀委網站頭條公布,中國第一汽車集團公司原黨委書記、董事長徐建一嚴重違紀違法被開除黨籍和公職。
Map of RIRs
RegistryArea Covered
AFRINICAfrica Region
APNICAsia/Pacific Region
ARINCanada, USA, and some Caribbean Islands
LACNICLatin America and some Caribbean Islands
RIPE NCCEurope, the Middle East, and Central Asia

Our primary role for IP addresses is to allocate pools of unallocated addresses to the RIRs according to their needs as described by global policy and to document protocol assignments made by the IETF. When an RIR requires more IP addresses for allocation or assignment within its region, we make an additional allocation to the RIR. We do not make allocations directly to ISPs or end users except in specific circumstances, such as allocations of multicast addresses or other protocol specific needs.

IP Address Allocations

Internet Protocol Version 4 (IPv4)

Internet Protocol Version 6 (IPv6)

Autonomous System Number Allocations

Procedures

Regional Internet Registry Creation

Technical Documentation