97资源总站97资源总站公开中文版超碰97免费人妻美媒:英美建太空联盟应对中俄“威胁”

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︰

  對錯這種判斷題對皇帝來說沒有任何意義,他需要看事情發展的方向有利于誰。   雲瑯認真的跟老虎解釋了一番,然後就重新爬上書房窄小的床榻,伸展了腰肢之後,這才覺得渾身舒爽。97资源总站 第一二九章 毫無痛快感的報復97资源总站公开中文版   霍光呲著白牙笑道︰“雲氏即便是一介小廝,一介侍女也是熟讀文字的。過幾年長大了,就會離開雲氏,或者求學,或者求官,最終成為我大漢的棟梁。家師常說,我雲氏不跟別人比富貴,不跟別人比權勢,我們只比書香門風。”   “換心?”金日驚訝的幾乎從床上坐起來。超碰97免费人妻   渭河的渡口因為船老大貸款修建的原因,跟以往大不相同,厚實的青石鑿出勾連機構,相互連接,相互鎖定,最終組成一個碩大的青石碼頭,讓河水奈何不得。
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