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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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  沒人會說這個羌人丟失了什麼顏面,只會覺得有一個健康孩子的羌人是一個幸運的人。   婦人就該留在家里照顧孩子,現在能靠織毛衣賺到錢糧,以後就少去放牧,哪怕去種田,也比放牧安全。大香蕉伊人猫咪v视频 第七十三章 皮里陽秋香蕉伊人大香蕉久草   “不管回不回來,我們都要活的,收割秋蠶就在這兩天,等到秋蠶收割完畢了,主人說不定也就回來了。”   那時候,就真的是悔之晚矣。大香蕉网伊人网4在线观看   雲瑯呆呆的看著何愁有離開,有些不甘心的捶了一下桌子,治理地方最可怕的就是政策不連貫,隨時隨地的重打旗鼓另開張,是最愚蠢的行為。
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