99re66久久在热线视频免费,99re6久久在热线视频国产久草在线视频久草新时代视觉东风集团上升3% 拟斥近6亿设新能源汽车基金

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︰

  在一個需要競爭的世界里,需要保證自己統治不會被瓦解的時代里,君主們考慮的更多的是自身。   梁贊趁機從師父手里拿過那本《勾陳》,輕聲道︰“我們的命運最終還是要掌握在我們自己手里才成。”99re66久久在热线视频免费,99re6久久在热线视频国产   才把大腦袋探進馬車,就把被雲音給用力退出去了。久草在线视频   于是就拖著漁網在岸邊的沙地上走來走去,在一片小小的匯水灣附近,雲瑯果斷的撒網。   不過,他們的武勇形象已經落進了劉陵的眼中。久草新时代视觉   “登徒子!”
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