青青草在线人人天天夜夜日日狠狠七夕影院影院午夜剧场伊朗再扣押一艘外国油轮 船上有70万升燃油

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):

發布時間︰

  司馬相如連連叩首道︰“猛虎在側欲擇人而噬,下官如何能定下心來寫賦?”   梁贊就跟在夏侯靜的身邊,身上背著兩個碩大的包裹,他的衣衫比較齊整,不像夏侯靜一身的戌卒打扮。青青草在线   梟盡的事情不過是大戰中的一個小插曲,霍去病回到軍帳中睡下之後,就把這件事忘記了。人人天天夜夜日日狠狠   對剛剛進門的東方朔道︰“派遣大匠們進駐九百里外的鏡鐵山吧,早日冶煉出合格的鐵錠,就多打造一些元朔犁,分發給百姓,告訴他們,這是大漢皇帝的恩賜!”   于是,他就想知道更多的關于雲瑯的事情。七夕影院影院午夜剧场   幫雲瑯研墨完畢之後,隋越就小心的拔掉了毛筆上的一根亂毛,將潤好的毛筆放在筆架上,小聲的道︰“君侯,今日您無論如何也該見見司馬相如了。”
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