中文字幕手机在线精品日本毛片基地一亚洲AV99久久免费热在线精品利奇马风暴来袭:浙江经济损失242亿 保险报损20.74亿

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︰

  雲瑯不斷地按壓,直到沒有血漬出現,這才用鹽水做最後的清洗。   雲瑯笑道︰“來看看,這樣的機會可不多。”中文字幕手机在线精品   不知什麼時候,劉陵從窯洞里出來了,就站在雲瑯的身後。日本毛片基地一亚洲AV   李敢搖頭道︰“沒人贏,都死的差不多了,連蟄這種深知明哲保身的人都丟了一條臂膀,哪來的贏家?”   雲瑯見霍去病看著他,就再一次抱拳對甦將軍道︰“如果將軍能把死在戰場上的那些戰馬給我們弄回來,您就能看到我們是如何開始的。”99久久免费热在线精品   投石機不是總能起到作用的,自從發現雷被手中有投石機,十幾個簡易的盾車就被造好了。
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