彩票大乐透走势图100期 datachart.500.com彩票大乐透走势图100期 www.cp121.com彩票大乐透走势图100期 tubiao.17mcp.com北向资金净流出创2个半月新高 游资狂抢稀土永磁

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︰

  劉徹站起來走了兩圈有些興奮,走著,走著,慢慢停下腳步回頭看著阿嬌道︰“不夠啊。大長秋,再去問雲瑯,計算是否有誤!”   未央宮有可能成為戰場,所以,皇帝就去了建章宮,在建章宮里待了不到一個時辰,連夜又去了相隔不過三十里的長門宮,而且行蹤保密。彩票大乐透走势图100期 datachart.500.com   雲瑯笑道︰“已經很冷靜了,廷尉大牢里面的犯人家眷沒有波及,近衛軍家眷沒有波及,沒有遷怒文武百官,拿去病泄憤,是因為他知道去病不會怪他。已經很冷靜了啊。”彩票大乐透走势图100期 www.cp121.com   “不是,我能跑到那里去?”   比如,今日擊劍八百次!彩票大乐透走势图100期 tubiao.17mcp.com   “扶昌邑王上位,日子總要繼續過下去。”
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