欧美av狼人干综合影院福利在线观看亚洲综合视频资源大摩:太航目标价下调至2.11港元 维持增持评级

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):

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她這番話就像用板子打人,一下一下,來勢凌厲沉重,我覺得每一下都 —她突然揚聲大笑起來,那笑聲尖說刺耳,宛如鋸子在鋸——“您往這邊瞧, 我那體貼人微的父親大人在為我修建這座塔樓的時候,把這點忘了??他只 想到讓我遠眺風景方便??醫生只說過,這兒陽光多、空氣好。可是這座露 台到時候也能對我有大用處。這點他們大家都沒想到,無論是我父親,還是 醫生、建築師,誰都沒想到??您從那兒往下面瞧瞧??”——她驀地撐起 身子,猛地一下把她搖搖晃晃的身體甩到欄桿旁邊。現在她用雙手緊緊地抓 住欄桿——“從這兒掉下去有五六層樓那麼高,下面是硬石頭??這盡夠欧美av 聲——等著。她剛一眼瞥見我,臉上立刻變色。 “那穌馬利亞,您怎麼啦?您的臉煞白??是不是??是不是艾迪特又狼人干综合影院福利在线观看 “啊,您想到哪兒去了??這事只能怪我??我不應該讓您在烈日曝曬下坐 那麼長時間。”亚洲综合视频资源 “舒服的日子——您想得倒美!七,八、九這三個月對于騎兵會是舒服 的日子!您難道不知道,這正好是對騎兵百般折磨的旺季啊!先是準備軍事 演習,然後向波斯尼亞或者加利西亞來回調防,接著舉行演習和盛大的閱兵 式!軍官們激動不已,士兵們疲于奔命,從早到晚都是勤務,而且要一絲不 苟。這場熱鬧戲一直得拖到九月下旬。”
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