彩票大乐透走势图100期走势 tubiao.17mcp.com360彩票导航走势图1360彩票双色球走势图大全申通与阿里签署购股权协议 完成后阿里将成控股股东

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︰

  “誰會看低我?”雲瑯瞅著平叟笑眯眯的問道。   平叟哈哈大笑道︰“這有何難,我卓氏產業遍布大漢,即便是偏遠的吳越之地也有店鋪,更莫說這京師要害之地。少年郎不願毀諾,乃是高風亮節之舉,老夫如何能讓你英名盡喪?”彩票大乐透走势图100期走势 tubiao.17mcp.com   “可曾熟透?”360彩票导航走势图1   雲瑯鄙視的瞅了一眼路邊食鋪里那些連豬食都不如的飯菜道︰“我信不過。”   “你是指當野獸還是當皇帝?”360彩票双色球走势图大全   平叟瞅著雲瑯印在窗紗上的影子道︰“入魔而已,沒什麼大不了的。”
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