彩票时时彩购买技巧时时彩票近期开奖号码彩票时时彩开奖时间柯文哲:台湾只有“草包”和“菜包”可选 真糟糕

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):

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  接連走了將近三十里的山路,雲瑯終于感到疲倦了,習慣性的鑽進左邊的一個山洞里,取出以前早就準備好的柴火,點燃之後,就與甦稚對坐在火堆兩側,相對無言。   雲哲抱著一摞文書站在角落里偷偷地看劉徹。彩票时时彩购买技巧   雲音笑了,拉住霍光的手道︰“你這麼聰明,難道也會有難住你的事情?”时时彩票近期开奖号码   何愁有笑道︰“王的榮耀會讓你卑微的心無所遁形,王的權力會讓你偉大的心變得無所適從,而最終,所有的榮耀跟權力都會歸于——王!”   霍光從來沒有想過當什麼亂臣賊子,他只想讓這個世界最好能按照本西北理工的邏輯進行運轉。彩票时时彩开奖时间   霍光從來沒有想過當什麼亂臣賊子,他只想讓這個世界最好能按照本西北理工的邏輯進行運轉。
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