大香蕉伊人久草AV久草热久草在线视频久草在线莫斯科遭炸弹威胁 俄航杯国际象棋赛一度暂停

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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我的嗓子眼堵住了,答不上來。我立刻明白了︰在所有的人當中,這樣 說話,這樣發問的只有一種人︰那就是盲人。只有瞎子走起路來遲遲疑疑, 這樣輕輕地拖著腳步,只有瞎子說起話來才有這種毫無把握的口氣。在同一 個瞬間,我腦子里像閃電似的忽然想起︰開克斯法爾伐不是提到過嗎,康多 爾娶了一個雙目失明的女人為妻?這個女人站在門縫後面發問,可又看不見 我,她想必就是他太太,只有她才可能是他太太。我竭盡目力往那里看,想 從一片陰影之中抓住她的身影,最後終于分辨出來,她是個身材瘦削的女人, 穿了一件寬大的睡衣,灰色的頭發有些蓬亂。啊,天主,這麼一個毫無魅力、 相貌難看的女人竟是他的妻子!被這麼一雙完全死去的瞳孔牢牢盯住,並且 知道,我其實並沒有被她看見,這種感覺真是可怕;同時,我從她現在把頭 探向前面側耳傾听的樣子感覺到,她正努力用她所有的感官來抓住那個陌生 人,他此刻正呆在這間她把握不住的房間里。她這樣一使勁,把她那張嘴唇 肥厚的大嘴歪扭得更加難看了。 “是的,他就住在這里。”她回答道,一口波希米亞方言。“不過他不大香蕉伊人久草AV 原諒我說句不知深淺的話——您的丈夫施與別人的實在太多了。” “他把一切都給了人家,”她激烈地打斷我的話頭,猛地一下子把椅子久草热久草在线视频 “這我真不明白??令媛平時不是對康多爾大夫無條件信任的嗎,既然 是他如此熱心地勸令媛去療養??那我實在不明白這事了。”久草在线
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