99热久久免费视频在线色综合亚洲色综合网站日本阿v片在线播放免费90后脱发警察回应“林志颖变郭德纲”:凌晨休息

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︰

  第二天雲瑯醒來的時候,發現甦稚正坐在窗前梳頭,長長的黑發從肩頭撒落下來,最後在她豐盈的臀部形成一道美麗的彎,讓人遐思無限。   皇帝的營帳就在河對岸,昨日傍晚的時候沒心情看,如今仔細看了皇帝駐蹕所在,雲瑯非常的羨慕。99热久久免费视频在线   劉徹笑道︰“從此,你為我大漢子民,前事不論!”色综合亚洲色综合网站   沒了雲瑯的雲氏就變得讓人面目可憎。   天亮之後,雲瑯重新來到小河邊洗漱,霍去病跟過來道︰“右賢王逃了!”日本阿v片在线播放免费   右賢王大笑道︰“我費盡了周折,才搞出目前的局面,豈能讓受降城逃過這一劫。既然伏擊不成,我們就堂堂正正的向白狼口進軍吧,兩萬大軍目前是這片土地上最強大的存在,我不相信,兩千多漢軍能夠阻攔住我的馬蹄!”
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