五月天亚洲图片婷婷丁香五月综亚洲五月天丁香婷婷天津市与国家电网“牵手”促“三型两网”建设落地

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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  與之相匹配的舟船車馬運輸,護衛,也隨之興盛。   死掉的三個人很快就被抬走了,一般來說,這三個人的死,對這里的任何一位列侯都造不成任何困擾。五月天亚洲图片婷婷   霍光呲著一嘴的白牙笑道︰“是啊,所以我跟師傅很好說話,丫鬟跟我師傅也很好說話。”丁香五月综亚洲   在木杠子不遠處,有一個奴隸在用嘶啞的聲音唱歌。   霍去病早就昏過去了,別看他怒目圓睜,雲瑯知道,這家伙早就昏過去了。五月天丁香婷婷   在木杠子不遠處,有一個奴隸在用嘶啞的聲音唱歌。
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