久草在线视频久草新时代视觉久草在线福利资源站特蕾莎-梅发表最后一次演讲:成为首相是最大荣耀

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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下面發生的事情真叫可怕。僕人向她俯下身去,雙手伸到她的腋下,用 我一直認為,書信是最為真切、自然和誠實的文字。因為它的不對外發表,導致了它的隨意天然。寫下的一切文字都是即時即刻的內心所想,思想到哪里,文字就到哪里。給親人寫信更是如此,半點的防範心理也不必有。所以,讀信讀到後頭實際上讀的是人。為此,讀傅雷家書我們讀到的也是傅雷。久草在线视频 久草新时代视觉 幸虧伊羅娜迅速地提出一個問題,打破了令人窒息的沉默︰ “您想喝點什麼,少尉先生,茶呢還是咖啡?” “啊,我隨你們,”我回答道。 “不,看您喜歡喝什麼,少尉先生!千萬別拘禮,都不費事的。” “如果方便的話,就喝咖啡吧,”我作出了決定,我心里高興的是,我 久草在线福利资源站 這時候我仿佛透過一層濃霧看見了那位父親。滿臉愁容——莫非他已經 知道了?——他正穿過客廳走來。他是向我走來?不行——現在不能和他見 面!在他面前,在所有的人面前,我驀地感到驚恐萬狀。我自己也不知道, 我在干些什麼。我跌跌憧撞地朝通向門廳的門走去,這扇門通向這地獄般的 屋子外面。
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