天天综合网久久网久久精品视在线观看299久久爱看免费观看焦炭期货开盘大跌6%触及跌停

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︰

  霍奇俠皺了皺眉,想要看準時機開槍擊斃李墨,卻突然看到思炫向他使了一個眼色。霍奇俠知道思炫的意思是叫他不要輕舉妄動,于是對其他三名警察說道︰“大家放下槍,讓他走。”   童杰嘿嘿怪笑了兩聲,從血尸里爬了起來,原本掛在他脖子、肩膀上的狗尸一具具滑落。他咧開滿是黑血的大嘴︰“爹說了,這里不允許外人進。如果外人進來了,就永遠不能出去。”天天综合网久久网   “原來你全都記得……”陳瑤的表情變得很復雜,她看向不遠處,那里有個懸崖,“秀浩,我們朝那個方向走吧,”她邊說邊架著他朝懸崖邊走去。走到懸崖前的時候,她淡淡地說道,“我沒想到我們還會見面,這或許是天意,林秀浩,你別怪我……”久久精品视在线观看2   無論從哪方面想都太荒謬了,不僅看到了另一個自己,還仿佛跌進了輪回漩渦回到了從前,這肯定是一個噩夢,跟發生的事恰巧重疊的噩夢。這類未卜先知的夢黎斯以前也做過,只是沒這一次這麼逼真。   李墨接受審訊的時候,口供基本跟思炫的推理一致,只有一點不同︰和他一起到倫敦酒店襲擊彭亮的只有楊高軍,王冬是在李墨進入牛排城後,才在彭亮的公司門口跟楊高軍會合的。99久久爱看免费观看
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