伊人大香蕉久久网97资源总站97资源总站公开中文版科创板转融通业务火热进行 9家头部券商掌握融券券源

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︰

  一支鐵騎突兀的從胡人背後殺出,上千匹戰馬嘶鳴著沖入人群,剛剛站穩腳跟的胡人,頓時星散。   直到現在,這群孩子依舊把他當一位七十多歲的長者來對待。伊人大香蕉久久网   邊民歸國,這是一個非常宏大的場面,歡呼的不僅僅是騎都尉軍卒,也有很多羌人。97资源总站   劉徹笑道︰“他們能干出什麼出格的事情來呢?”   曹襄苦笑道︰“還偷偷地把我亞父的鎖子黃金甲穿來了,穿上這一身盔甲,誰敢不讓他從軍?誰又能不讓他從軍?子承父業,大孝啊!”97资源总站公开中文版   “咦?軍營里什麼時候開始教人識字了?”
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