亚洲在线影院CaoPorn97资源总站超碰在线视频97棉纱期货交易规则

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︰

  他希望一切都是新的……他想要建立一個遠超前人,媲美三皇五帝的新時代。   雲瑯率領的甲士剛剛露頭,那群無賴子就發一聲喊,四散奔逃。亚洲在线影院   狄山瞅著王溫舒笑了,指著他道︰“我……我……用性命……擔保……太子……與……此事……無涉!”CaoPorn97资源总站   雲瑯奇怪的道︰“這有什麼好害怕的?”   甚至可以這樣說,此時此刻,是劉徹作為皇帝,權力最小的一刻。超碰在线视频97   以前的時候,始皇帝一天要看五百斤重的竹簡木牘,自從雲瑯改進了造紙術,弄了印刷術之後,五百斤重的簡牘內容對劉徹來說簡直不值一提。
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