近期中奖彩票号码彩票表格下载大發彩票天福6月21日斥5.12万港元回购1万股

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︰

  話音未落,梁贊就被霍光一腳從床榻上給踹下去了。   “要是有一人看穿了您的計謀,不計較父兄之死,轉而跟底層羌人打成一片,這樣的人您該怎麼辦呢?”近期中奖彩票号码   兩軍終于接戰了……彩票表格下载   雲瑯側耳傾听了一陣子,就果斷的阻斷霍光繼續吹塤,此時此刻,唯有隆隆的戰鼓聲,才能激勵將士們繼續前進。   霍光赤裸著上身,剛剛練武完畢,一柄長矛拖在身後,上面還插著一只野雞。大發彩票   日出的時候,就出發,日落的時候就宿營,這樣的行軍速度算不得快,卻也比牧民們驅趕著牛羊前進的速度要快的多。
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