免费三级现频在线观看亚洲人成电影在线观看琪琪影院yy480线观看外汇局:6月外储上升182亿美元 因汇率和资产价格变化

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︰

  “你窺探我們?”楊少卿問。   楊典娘惶惶不可終日,以為是自己害死了丈夫,不敢對外聲張,每夜噩夢連連,疑心丈夫會回來索命。免费三级现频在线观看   楊少卿說他身子骨不好,同他早亡的前妻楊典娘一樣,有肺熱之癥,每到秋冬尤其厲害,所以冬天嫁入楊府時,兩人幾乎完全沒有同房過。亚洲人成电影在线观看   “先生總是太好心。既然已遠離那些是非多年,若因這等小事再惹來麻煩,該怎生是好……”說到這里,見他目光微沉,知是自己多了嘴,忙彎眼一笑,湊到他近旁指著他手中物件道,“先生這麼用心,又是給誰畫皮呢?”   婉貞在她身旁坐了下來。琪琪影院yy480线观看   這到底是怎麼回事?!
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