大香蕉新版伊人大香蕉伊人在线猫大香蕉综合伊人9新华社评论员:坚定高质量发展方向不动摇

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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“‘抵??抵押?’她重復了一遍。卡尼茲立刻覺察到,她是平生第一 次听到這個字。 “但是卡尼茲不知疲倦地驅趕她在這人為的圈子里轉來轉去,一方面真大香蕉新版伊人 “我怕,這番話您不怎麼愛听!您過去把醫生看做救星,看做真理的化 身,這幻想現在破滅了!您青春年少,熱情洋溢,把醫學道德完全設想成另 外一個樣子,而現在??我已經看見??有點冷靜下來,甚至對這類行醫之 道大倒胃口!但是,遺憾的是——醫學和道德是毫不沾邊的︰每種疾病本身 就是一種無政府主義的行動,是對大自然的叛亂,所以可以采取一切手段來 對待它,什麼手段都行。不,千萬不要同情病人——病人已經把自己置于法 律之外,他破壞了秩序;而為了恢復秩序,也就是為了使病人康復,就必須 像對付每次叛亂一樣,不顧一切地采取果斷的行動——手頭正好抓著什麼就 使用什麼,因為單憑善心和真理,從來沒有把人類治愈過,也從來沒有把某 一個人治愈過。如果一個騙人的把戲把病治好了,那它就不再是可鄙的騙人 把戲,而是第一流的特效藥了。踫到一個病例,只要我在醫學上已經無能為 力,我就必須設法幫助病人拖延時間。一連五年之久,老要想出一個新的招 數來,特別是他對自己的絕招也並不怎麼信服,少尉先生,單單這一點也已 經不是件容易的事情了。反正一切恭維奉承,我都敬謝不敏!”大香蕉伊人在线猫 他的火氣嚇了我一跳︰顯然我傷了他做醫生的自尊心。于是我設法安慰 他。大香蕉综合伊人9 “‘那麼您還是呆在這里為好,’他說。他不由自主地補充了一句,聲 音壓得更低了︰‘您就呆在我這里吧。’
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