亚洲成人社区偷拍久久国产视频老司机在线国产美股股指期货扩大跌幅 纳指期货跌1.2%

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):

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  四處打量一下,雲瑯笑道︰“我還是第一次上這座樓,建造的時候甦稚不許我上來。”   老虎早就累了,可是它不敢停下來,霍去病就站在二樓上,手里拿著一根長棍,只要老虎敢偷懶,他就會下死手。亚洲成人社区   出來迎接的不僅僅是雲氏的所有家人,即便是阿嬌,衛青,霍去病,張氏,曹襄也站在主樓前躬身施禮。偷拍久久国产视频   雲瑯決定听公孫弘的,據他所知,主父偃的下場不太好,而公孫弘的下場雖然也不是很好,倒霉的時間卻比主父偃晚的多,而且,據說主父偃就是被公孫弘給殺掉的。 老司机在线国产   “這不一樣!”
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