一本道DVD在线伊人在线视频一本道广晟有色:受益稀土价格上涨 预计上半年大幅扭亏

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︰

  狼煙升起了,上林苑里的所有活物似乎都藏了起來,雲瑯跟老虎不敢走大道,現在,有很高的可能會遇見匈奴人的騎兵大隊。   雲瑯嘆息道︰“他們如果不跑,僅僅是藏起來,也不會落到這個下場,至少,我不會追究的,當初,他們來雲氏的時候,我就沒有指望他們能夠護衛雲氏。真不知道他們是怎麼想的。”一本道DVD在线   雲瑯敷衍完畢了公孫敖,就再一次去查看了一下那些依舊昏迷不醒的軍卒。伊人   大長秋哈哈大笑道︰“貴人對長得好看的男子從來就沒有什麼好臉色,尤其是你這種長得陰柔的人,更是討厭,能跟你說這麼多的話,老夫都感到奇怪。對了,你不會幸進吧?” 在线视频一本道   雲瑯站在張連的床邊溫言勸解。
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