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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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  “我身體弱,有病,如果不綁住他們,死的只會是我,我母親要給曹氏族人一個公平,自然就只能綁住他們了,這是事前說好的,很公平,也是母親給他們擺出來的一條活路。知道不,即便是如此,他們也不肯放棄,他們賭我是個窩囊廢,一個連人都不敢殺的窩囊廢。然後,他們就死了……嘿嘿嘿……”狼人干综合   雲瑯的嘴皮子哆嗦兩下,無奈的道︰“這話對正常人來說沒問題,對兩個痴人來說,他們會當真的。”情色综合   不一會,偌大的飯廳里,就剩下雲瑯,曹襄兩兄弟大眼對小眼。   自從刀子被丟出來了,雲瑯懸著心也就回到了正常位置,沒興趣看兩個傻瓜斗毆,就盤腿坐在屋檐下,沖著曹襄笑。狼人干综合伊人网   “那是因為你沒有收拾過東郭咸陽,跟孔僅這樣的豪門巨富,人家桑弘羊卻是真真切切的收拾過真正的富家翁的。
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