香蕉网站伊人大香蕉伊人大香蕉大香蕉人人大香蕉大香蕉伊人猫v莎普爱思上半年净利润再降49% 滴眼液收入减少31%

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︰

  一個兒子被打昏了,一個兒子被嚇跑了,另外一個在裝傻,最後一個兒子吃東西吃的忘我,于是,皇帝就自己跳出來了。   “東邊呢?”香蕉网站伊人大香蕉   而舅舅打人從來就不知道什麼是輕重,一個四十余歲的成年男子,被舅舅活活打死了,傳出去不好听。伊人大香蕉大香蕉人人   司馬遷被綁在柱子上的時候卻毫不在意,雖然雨水已經把他的胡須跟頭發澆的纏繞在一起,兀自向雲瑯大聲道︰“我死了,還會有人繼續書寫,且一字不差。”   他知道這樣做不對,可是,褚紅英堅決的要雲哲把她當成男子來看。大香蕉大香蕉伊人猫v   曹襄對這三個字贊嘆不絕,他覺得他的皇帝舅舅的書法堪稱天下第一人。
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