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IPv6 is occupied the interest of the next generation internet in the world, and the IPv6 internet is growing steadily. In Japan, there are already many kinds of hardware products, applications, and services supporting IPv6 to deploy it.
This research aims to measure the progress of IPv6 usage and operation. This activity is based upon the contribution by the ministry of internal affairs and communications of Japan from 2003.
- 2003 - 2005 : 'a research on the migration of the Internet Technology to IPv6'
- 2006 - : 'a research on the status of the utilization of IPv6 Internet'
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 JUNE 2006
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Scale of IPv6 Internet
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Japan was the leader acquiring the number of allocation of IPv6 address block until 2003, but the United States of America has taken the first place of it today.
In addtion, Germany and the United Kingdom increase their acquisitions, and Germany will overtake Japan perhap in 2006 to become the second place of the number of allocation in the world (CHART 1).
CHART 1: Number of allocated IPv6 address block classified by country
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Migration status of IPv6 Internet
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According to this chart (CHART 2), it seems that the growth rate of routings based on IPv6 keeps stable in similar to routing based on IPv4.
This chart will grow relatively when the rate of IPv4 will decrease.
Because the number of traffic of the specific IX changes strongly by month, this chart doesn't show the remarkable growth (CHART 3).
CHART 2: Ratio between v6ASes and v4ASes
CHART 3: Ratio between IPv4 and IPv6 traffic at IX
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Characteristic of IPv6 Internet
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As a consideration of the growth of the IPv4 Internet, this chart explains that DNS server seems to support IPv6 steadily (CHART 4).
CHART 4: Ratio between IPv4 and IPv6 domains which enable DNS service classified by second level domain
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