大香蕉新版伊人大香蕉伊人在线猫大香蕉综合伊人9中国联通混改后首开党代会:王晓初当选为党委书记

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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—這種記憶力似乎和我有關私事的記憶力截然分開,在我頭腦里像軍人一樣 嚴格地起作用——使我立刻想起,今天安排了一種特別的操練。樓下已經號 角齊鳴,戰馬踏著馬蹄,清晰可聞,從勤務兵一再催促的樣子我看出,想必 已到動身出發的緊要關頭。我猛地一下子穿上已經擺好的軍裝,點上一支煙, 一陣風似地沖下樓梯,跑進院子,一轉眼就已經和列隊待發的騎兵中隊一起 催馬出發了。 他目不轉楮地凝視自己,在他眼鏡後面,他看到了自己那雙驚慌失措、睜得 大大的眼楮,驀地記起了先前另外的那雙眼楮。他深受震動地想到,要有這 麼一雙眼楮才好,不要像我這樣的眼楮,眼圈紅紅的,貪婪而又焦躁。要有 那樣一雙眼楮,清澈碧藍,晶瑩明亮,被一種內在的信念激動得生氣勃勃。大香蕉新版伊人 “現在請您仔細听著︰幾天前我們在醫學協會听一位第一流的化學醫學大香蕉伊人在线猫 焦灼不安的人必定準時,因此,我甚至比預定的時間還早一刻鐘就已經 站在那家酒館前面。不早不晚,恰好在約好的時間,康多爾乘一輛雙駕馬車 從火車站馳來。沒有任何繁文縟節,他徑直朝我走來。 “‘可是您想必已經有了一個大致的設想,小姐??歸根到底,咱們總 得知道,這個產業有沒有抵押出去,抵押了多 少??’大香蕉综合伊人9 ——反正有一道玫瑰色的光輝越來越強烈地掠過她那窘迫的臉龐;這個已不 年輕的姑娘在此時此刻看上去簡直可說嬌美動人。
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