色综合图区一本道综合久久免费亚洲在线成色综合网站/国产偷拍自拍91/五月婷婷久久香蕉伊人/在线视频偷国产/亚洲自拍在线网站2019年全球创新指数发布 中国排名上升至第14位

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︰

  離開了長門宮,雲瑯不準霍光去窺探長門宮。   “這是你夫君的主意?”色综合图区   “這就是雲氏的根本嗎?”甦子良指著眼前的沃野問。一本道综合久久免费   “早就告訴過他,不要離皇帝太近,他偏偏不听,也算是自尋死路啊。”   大長秋閃電般的竄進大殿,跪地將一卷文書呈遞給了皇帝。亚洲在线成色综合网站/国产偷拍自拍91/五月婷婷久久香蕉伊人/在线视频偷国产/亚洲自拍在线网站   “到了那邊我想多吃一點全糧食的飯,不要加這麼些野菜,野菜不好吃!”
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