欧美AV.日韩AV最新地址在线免费观看国产超级av在线视频日韩亚洲电影av国产自拍车市下行压力增大 多数汽车上市公司业绩下滑

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︰

  寫藥方的時候,雲瑯也算是感慨萬千,當初在孤兒院里,感冒發燒之後,去不起大醫院,只能去找最近的赤腳醫生,用草藥續命。 第七十三章 見微知著欧美AV.日韩AV最新地址   雲瑯笑道︰“剛才我與甦稚在平台閑聊,說起淮南王的事故,甦稚說——關我家何事,我以為她說的很對。因此呢,我剛才說的話,你直接理解為字面意思就好,我說的是我家收留的那些傷兵,那就一定是傷兵的事,不牽涉任何人。我也不會在您面前繞著圈子說話。”在线免费观看国产超级av在线视频   “就跟你一樣?”   褚狼躬身道︰“以前只是在查八胡校尉之事,既然主人已經有了方向,這就去繼續查探!”日韩亚洲电影av国产自拍   雲瑯見東方朔還在遠處,就小聲在曹襄耳邊道︰“去病他們在三天前的夜晚,突襲了八胡校尉營地。”
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