大香蕉伊人久草av夜夜鲁媽媽鲁播放交银国际:腾讯目标价455港元 维持买入评级

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︰

  雲瑯搖頭道︰“我連馬上封侯的想法都沒有,只想著怎麼才能活的長久,公侯萬代還是算了,當初有這種想法的人,現在全死光了。”   “三五個人的事情,他們要是知道才是怪事情。”雲瑯喝了很隨意的敷衍了一句。大香蕉伊人久草av   雲瑯吃完面條,上下打量了一下這個窮鬼,再看看富態的劉婆,一點都不看好劉二的愛情。夜夜鲁   李楊氏猶豫地道︰“這樣真的可以嗎?”媽媽鲁播放   東方朔口才了得,雲瑯剛剛就听見他前面說的幾個字,剩下的全是駢四儷六的短句,雲瑯听了一頭的霧水。
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