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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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  首先映入眼簾的就是數百頭匍匐在地上的戰馬,牲畜,輜重營的軍卒正在有選擇性的屠殺那些已經快要死的牲畜,至于還能活一陣子的,準備繼續養著,免得一時吃不完這麼多的肉食。   曹襄堅決的搖搖頭道︰“必須前行,直到找到去病跟阿敢為止!”亚洲套图   藥水泡水洗腳是雲瑯自己在家里弄出來的,是被公孫弘操練過度的日子里的想出來的解乏方子,沒想到被甦稚用到了這里。在线a亚洲视频   拉車的牛馬,總想低頭去啃咬,卻被嘴籠子阻礙無法享用這樣的美餐。   最要命的是,這群混蛋們似乎對甦稚產生了強烈的保護欲望,雲瑯僅僅是隨便評價了一下甦稚粗糙的縫合手法,那個被縫合的家伙居然惡狠狠地看著雲瑯,覺得他非常的礙事!亚洲欧美在线x视频   就算劉寄他老子劉佩來了,也同樣對那張文牒一點辦法都沒有。
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