猫咪大香蕉伊人a在线天天爱搞搞狠狠爱亚洲在线央行研究局副局长:中国在汇率方面一直是负责任大国

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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  這是一定的。   衛青笑道︰“嫡親外甥,如何不看重呢。”猫咪大香蕉伊人a在线   張安世是如此的憤怒,韓澤等人也幾欲發狂。天天爱搞搞狠狠爱   “為什麼,他們現在很听話,而我大漢也頒布了《奴隸管理章程》,不準主人苛待奴隸,曹氏旁支的好些奴隸都不用戴鐐銬了,甚至還好心的給他們婚配。依我看來,給奴隸解除鐐銬,準許他們繁衍,會成為一種大趨勢,不出三年,一定會成為一種普遍現象的。”   狂吃了一個月的侯國兵,郡國兵們終于開始後悔了……亚洲在线   因為這家伙挺胸腆肚的站在台子上,比他這個衛將軍還要衛將軍。
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