午夜视频在线国产开心五月婷婷色婷在线人人婷婷开心情五月“腾讯基因”讨论:为什么做to C的人很难去做to B?

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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  “可是,這麼個石頭人,吃又不能吃,用又不能用,別說拿回去沒用,就算有用,好幾萬斤重的狼東西,他怎麼能說拿就拿?”   我莫名其妙,這是啥?中醫藥方還是什麼飲品配方?這三樣東西都不是什麼稀罕物,靠這個就能打動劉戰斗?不會是誰的消息發錯了吧?午夜视频在线国产   黎斯眉頭一皺︰“有何證據懷疑他?”开心五月婷婷色婷在线   我去找《清明上河圖》照片的時候,圖書館不無得意地告訴我︰“你想找銀號的賬本、赫德的海關檔案、張學良的電報密碼本,咱都能給你挖出來。”這句話讓我印象深刻,一直記在心里。他專注收集各類破舊檔案這麼多年,說不定真能查到點東西。   古玩交易,是一樁隱秘交易,很少當著人。樊波既然不參與業務,自然對里面的彎彎繞繞茫然無知。找他了解樊滬記的交易,就好像找銀行門口的保安問貸款的事情一樣。人人婷婷开心情五月   樊波想了半天道︰“跟老掌櫃最好的,應該是一個叫周順勛的先生。”
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