彩票字图片彩票励志搞笑图片图库彩票中欧商学院“好同学”:老板内幕交易 被罚没近900万

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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  五十個小子一起吟唱《關雎》倒也像模像樣,最讓賓客動容的不是吟唱的內容,而是雲氏已經有了五十個識文斷字的幼童。   少年郎甩開那個瘦小的少年大聲道︰“我就要讀書!”彩票字图片   也就是因為這個原因,宋喬堅決不許兩個嬤嬤跟雲瑯見面。彩票励志搞笑图片   雲瑯點點頭道︰“且看看他的下場吧!”   “這雞湯奇怪啊,一碗下去,渾身滾燙!”霍去病已經去掉了身上的皮裘,連單衣都去掉,赤裸著上身,繼續對付這鮮美的雞湯。图库彩票   “其實,五年前衛綰罷相的時候,陛下就有意讓公孫弘出任宰相,只可惜太後那一關並未過去,所以就找了老好人薛澤來過渡一下。明年開春,將是陛下大展宏圖的一年,薛澤無論如何不可能繼續就任宰相了,怪不得他敢對主父偃半點情面都不留。”
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