欧美阿v高清资源在线2019最新先锋av资源站玖玖资源站最稳定365中国海军4艘军舰穿越宫古海峡 南下太平洋

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︰

“不了,不了,”她低聲說道,神情有些尷尬。“我有急事,家里等著 我呢。” “我還得謝謝您送的那些非常美麗的鮮花??這些花的確美極了,您瞧 瞧,插在花瓶里多好看啊。另外??另外??我也得請您原諒,我那天很夫 態,真愚蠢。??我那天的行為實在可怕??整整一夜我都沒有睡著,我實 在羞愧極了。實際上您是一番好意??您怎麼可能預先感到呢。再說”——欧美阿v高清资源在线 時候我們覺得奇怪,親愛的天主竟有閑心讓這麼一座小城的七八百座屋頂上 面布上另外一張蒼穹,旁邊安排另外一番景致。2019最新先锋av资源站 身去,在她耳邊低聲說了幾句,可是姑娘顯然激動起來,她火氣很大地向她 的女伴嚷道︰“不嘛,約瑟夫只要把我扶起來就行了。我要自己走。” 玖玖资源站最稳定365 痛苦。” 他們二個饒有興味地瞅著我,我心里立刻不自在起來。我暗自尋思,最
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