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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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  梅花鹿呦呦的哀叫著,一次次的將腦袋伸過來想要在老虎身上蹭蹭,每一次都被老虎一巴掌打飛。   長安城里的人口在迅速的簡單化,而富貴城的人口卻在日益的復雜化,畢竟,想居住在長安城里,權勢缺一不可,富貴城就簡單的太多了,只要你有錢,就能進來,只要你能買得起富貴城里的房子,你就能享受富貴城里的稅率,管理,子弟上學,乃至安全城市服務帶來的種種便利。久久爱视频   他們對通過九條秦馳道用商業將國家帶入一個前所未有的繁榮場面的想法一點興趣都沒有。久久爱在线播放视频   來的時候師傅早就說過,這一路上最可怕的不是蠻人而是毒蟲跟   雲瑯一路上心急如焚,劉二一干家將幾乎要用跑的才能追上已經走出很遠的家主。日本一本道大香蕉久久   郭解把飯盤里食物吃掉,將盤子放在手邊道︰“準備拼命吧,我們這一遭就不是來做生意的,是給大家伙找十年後的靠山的。雲瑯這些人認為我們就是尿壺,用完了覺得腌也就隨手丟了,我們現在必須要找一個強硬的靠山,好不容易搭上殿下這條線,不能輕易的丟掉。”
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