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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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更加溫和的囚禁!我得縱身上馬,和別人一起策馬向前,我必須全神貫注, 渾身緊張,這也真是對我行善!我得服從命令,我得下達命令!操練三四個 鐘頭也許可以逃脫自己,擺脫自己。 官席上一坐,輕松愉快,可以感覺出來,紅獅酒家的這間粉刷得不太干淨、 四壁給煙燻得發黃的大廳就是他的家,遠比阿姆斯特丹某條運河旁邊他的那 座城堡親切百倍。我們永遠是他的孩子,他的兄弟,他真正的家。他每年都 捐款給我們的障礙賽馬作獎金,每逢聖誕節總會運來兩三箱各色燒酒和香檳 酒。每年元旦,上校有絕對的把握,準能收到一張票面極大的支票,用以充 實存在銀行里的全團同人的金庫。誰要是身穿輕騎乓的制服,領子上帶著我 們的領邊,一旦遭難,完全可以指望得到巴林凱的幫助,只消寫封信給他, 一切部會彌縫妥帖。色偷拍亚洲偷自拍视频 “這麼說,您再也不對她記仇了嗎?”亚洲偷偷自拍高清无码 三十五 ——只是在它的邊緣映出一個塔樓的奇怪輪廓,像牙簽一樣狹小。這就是她 那帶露台的塔樓啊!我不覺大吃一驚。這個思想又不邀自來,我被迫凝望那 邊,不得不回想起︰八點鐘,此刻她早已醒來,正在想我。也許她父親正走综合图片亚洲网友自拍 三十
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