丁香五月综合缴情电影丁香五月缴情在线丁香五月缴情在线保定“削山”别墅企业:投资凤凰古城 子公司百家

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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  就他們三個人而言,彭琪才算是被真正重用了。   曹襄狠狠地用手搓搓臉,對母親道︰“讓他變得聰明些,或者變得更加愚蠢些。千萬不要是眼前這副樣子!這個樣子的劉據要是成了大漢的君王,孩兒與雲瑯,去病真的只有披發入山修道這一條路了。”丁香五月综合缴情电影   霍去病道︰“趙禹已經老朽了,不能再當陛下的爪牙,王溫舒遲早要成為廷尉,彭琪去了詔獄,是一個很自然的事情。”丁香五月缴情在线   甦稚將霍光推出門外,惱怒的道︰“你師傅一定是好的,這還用問麼?”   雲瑯推開霍光制造的一堆垃圾問道。丁香五月缴情在线   霍光會錯了意思,想想從長安到西域路途上的艱險,也跟著點點頭,不由自主的對西北理工先賢們生出一股子崇敬之意。
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