大香蕉www色视频网站青青草成电影免费视好xoo在线视频永久免费上半年服务贸易在对外贸易中占比提高 逆差继续收窄

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︰

  霍光也跟著過來,似笑非笑的看著毛孩。   霍去病呵呵笑道︰“換了微臣去,只會殺的更多。”大香蕉www色视频网站   霍光來了,雲音早就不想彈琴了,只是父親,母親一直說做人要有始有終,這才耐著性子繼續彈琴,好不容易彈完了最後一個音符,就離開古琴,匆匆的跑到霍光面前仰起臉期待的道︰“小光哥哥,我彈得好不好?”青青草成电影免费视   甦子良如遭雷擊,捶著胸口對甦稚道︰“我拿老命來給君侯賠罪,只求君侯出面救救你弟弟。地上的這些錢全部拿去,我只想保住你弟弟的命!”   毛孩將肩膀上的松鼠放到樹上,然後拍拍樹干就去了蓮花菜菜地。好xoo在线视频永久免费   霍光的喉嚨里發出一陣類似老虎咆哮的低音,拎起丑庸剛剛準備好的小木桶,扯了一條曬干的毛巾就去了溫泉池子。
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