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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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  好讓全世界變得大同,大家都是傻瓜,都傻乎乎的生活,傻乎乎的治理國家,傻乎乎的作戰,這才是最正確的方式!   雲瑯完全能想象的出來,太宰一個人坐在這里的時候有多麼的寂寞。喝完酒,雲瑯就穿過集市,在距離集市一箭之遙的地方有一座城池名曰——咸陽!日日啪啪在线影院   “你既然知道人生苦短,怎麼還敢浪費自己的日子?整日里與農婦為伍,接觸的不是桑蠶,就是莊稼,這樣的日子你打算過到什麼時候?從哪天看到你真的不用老母雞就把小雞給孵出來了,我就知道你的本事很厲害!怎麼樣?先跟著我去找阿嬌打麻將!”日啪 日日啪在线影院   雲瑯自然是同樣的打扮,他的身體就好看的多,不但骨肉勻稱,而且皮膚充滿了光澤,全身上下,一塊疤痕都找不見。   十四個高矮不一的老頭,有的強壯,有的瘦弱,有的還強忍著不咳嗽。日日拍日日啪在线视频   鑄錢的人多了,鑄造出來的錢幣質量就會直線下降,便宜的鉛錫一個勁的往銅水里面添加,一斤銅會變成一斤半銅……然後,到老百姓手里的銅錢就會變成一捏就碎的爛玩意。
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