91视频有哪些大神凹凸91视频在线观看91视频直播在哪看印度要为国产LCA战机装鸭翼 技术受制于人风险太大

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︰

  雲瑯朝皇帝拱手道︰“前秦已經覆亡,只剩下一位皇帝的殘蛻埋在深山里,不論他生前多麼顯赫,死後只會是一?g黃土,說他做什麼。   “對啊,心驚膽戰的被老虎騎回來,已經精疲力竭了,又被老虎圍著身子轉了十幾圈,隨時等著老虎的大嘴啃咬呢,這會才死,已經很難得了。”91视频有哪些大神   劉徹笑著擺擺手道︰“現在發現也不晚!”凹凸91视频在线观看   雲瑯有些傷感的道︰“五年前身故了。”   “哦,那就沒關系了,我這個朋友不怕疼。”91视频直播在哪看   “元宵!”
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