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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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  雲瑯鄙夷的道。   歷史上的明君一般都是孤獨的,只有昏君才朋友一大堆,即便是死了,也會有無數人真正的懷念他。亚洲最大的成人网站   離開受降城的時候巴澤爾非常的遺憾,他想用錢來買通守門的將士以及那些胥吏,好讓他留在受降城。亚洲成人色图   劉徹之所以回想起經營西域,最大的原因就是為了商道,剛開始的時候沒人在意西北地的這條商道,可是隨著匈奴人被驅趕出西北地之後,這條商道就給大漢帶來了極大的利潤,利潤最高的時候,國庫中三成的收入都來源于此。   高個子宦官掩著嘴輕笑道︰“這種話啊,我們都說過,可是呢,等傷口好了,小黃門的衣衫穿上了,有沒有那個東西又有什麼打緊?你不知道啊,沒了那東西的好處多多,你以後慢慢體味就會知道,這里呀,先賣個關子,等你知道好處了,嘻嘻……”亚洲第一成人网站   “有一個美的如同江河女神阿納希塔一般的女子給我的,她用這片東西換走了我所有的乳香。”
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