我要爱久久影视日本毛片高清免费视频日本黄大片免费播放器李国庆谈被逐出当当:有些事情一辈子都不会原谅俞渝

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︰

  事情談完了,日頭也已經偏西了。   這是你身為皇長子的最大優勢,孩兒啊,你一定要善用自己的優勢!”我要爱久久影视   應雪林拿過那張紙掃了一眼倒吸一口涼氣道︰“好貴的地產,雲侯確定百姓們買的起?”日本毛片高清免费视频   張安世把雞蛋塞嘴里吃掉,喝口粥道︰“會上林苑,富貴城的城牆馬上就要合攏了,該提前布置了。”   狄山很高興,霍光聰慧之名他听過好久了,他在太學講課的時候,霍光從頭听到尾,數次提問也能切中時弊,沒有辜負他的聰慧之名。日本黄大片免费播放器   人們總是喜歡跟經常跟皇帝互動的人來往,似乎只有這樣做,才能彰顯他們的存在感。
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