综合图区经典香港亚洲经典三级无码经典在线三级视频行业并购风云再起 碧桂园服务收购港联不动产

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︰

  “如此,老夫就放心了,走好,不送。”   “董君!”综合图区经典   “其實你可以修一條路,一直通到產煤石的地方,雖然中間要過幾處山澗,山道也難走,以你家里的那幾座橋梁模型來看,應該難不住你才對。”香港亚洲经典三级   關于東方朔的這些事情,是大長秋告訴雲瑯的,這個老宦官,總能從一些別人想不到的渠道弄到一些讓人心酸的真實答案。   那個叫做張連的家伙,祖宗就是大名赫赫的留侯張良,那個叫薛亮的,他父親就是宰相薛澤,還有那個長的最高的家伙,他就是周勃的後代。无码经典在线三级视频   看來歷史上記載的是對的,秦陵周邊確實有十里沙海。
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