CaoPorn超碰免费公开视频伊人情色网伊人影院iPad从此可以当电脑来用 只因为有了这个设备!

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, 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):


  送走了雲瑯,劉徹站立城頭的時間就更長了。   西北的大部分山川,都是以匈奴的音譯來命名的,即便是雄偉的祁連山也不例外。CaoPorn超碰免费公开视频   “魚找魚,蝦找蝦,烏龜找王八,不是一家人不進一家門,此言簡直就是金玉良言。知道不,夏侯蘭最崇拜的人居然是卓姬,這實在是讓我太頭疼了,師兄,你說夏侯蘭會不會有一天也跟人跑了?”伊人情色网   金日捂著劇痛的脖子沖著霍光怒吼道︰“你的手套上有毒!” 伊人影院   失敗者九鼎烹,勝利者九鼎食!
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


Regional Internet Registry Creation

Technical Documentation