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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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  劉婆訕訕的一笑,她也覺得自己剛才說的話有些不妥。   大一統的國家就要有大一統的氣勢,劉邦是一個徹頭徹尾的實用者,他才不管那些東西是大秦的,那些東西是趙國的,那些東西是楚國的。不卡的在线av网站   穿著一身紗衣的阿嬌重新爬上那個天鵝狀的羊皮囊,劃著水來到一片蔭涼處問道︰“雲瑯他們在干什麼?”av天堂   大長秋愣了一下,仔細的看了雲瑯一眼,發現他臉上已經浮現了一絲哀痛之色,就不再問了,拍拍他的肩膀,就出了倉庫。   在殘酷的現實面前,他又開始懷疑自己的夢想是否是正確的,就這個看似很合理的懷疑,雲瑯就知道,曹襄想要成為一個名將的夢想可能已經破滅了。av电影   大長秋沒好氣的對雲瑯道︰“你難道不覺得陛下臨幸長門宮比你這幾個雞蛋更重要嗎?就陛下賞賜下來的錢,就比你養十年雞賺的錢要多。”
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