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| 1995 |
Basic specifications for IPv6 were established by IETF (one drafter was a NTT Research Institute staff member). |
| 1996 |
NTT Research Institute began operating one of the world's largest IPv6 trial networks. |
| 1997 |
CICNet and NWNet (current name Verio) began operating a major POP of 6bone. |
| 1999 |
NTT Com became Japan's first commercial ISP to acquire sTLA. |
| 1999 |
NTT Com began its OCN IPv6 Tunneling trial service with more than 200 subscribers of the OCN service. |
| 2000 |
NTT MCL began offering the world's first commercial IPv6 IX service through its location in San Jose, U.S.A. |
| 2000 |
NTT Europe began IPv6 trial service. |
| 2001.4 |
NTT Com began IPv6 Gateway Service, an international transit service for ISPs and data centers. |
| 2001.6 |
NTT Com launched OCN IPv6 Tunneling Service, the world's first full-scale commercial IPv6 service and available nationwide in Japan. |
2001 Autumn |
NTT Com became a key member in national projects such as the Home Appliance Trials in Japan and 6NET in the EU. |
2001 Winter |
NTT Com began IPv6 HOTSPOT trials for its WLAN trial service called HI-FIBE. |
| 2002.6 |
INTERNET MULTIFEED began JPNAP6, a distributed Internet exchange service supporting IPv6. |
| 2002.8 |
NTT Com began OCN ADSL Service IPv6 Dual (A), a broadband IPv6/IPv4 dual stack service with a Plug&Play function. |
| 2002.8 |
NTT Com expanded its OCN IPv6 Tunneling Service to the initial introduction of IPv6 by ISP, CATV, universities and businesses. |
| 2002.9 |
NTT MSC began IPv6 service in Malaysia. |
| 2002.9 |
NTT Com won the "Best Technology Foresight" and "Best Carrier s\ AP Region" awards at World Communication Awards 2002, a first for Japan and the first double award for Asia. |
| 2003.2 |
NTT Europe began IPv6 service in Europe. |
| 2003.3 |
NTT Com extended OCN ADSL Service IPv6 Dual (A) to cover all of Japan. |
| 2003.6 |
NTT Korea, NTT Taiwan, NTT com Asia, and NTT Australia began IPv6 Service. |
| 2003.12 |
Verio Launches Commercial
North American IPv6 Gateway Services. |
| 2004.2 |
Commencement of pilot "Net-enabled Appliance Connection Service". |
| 2004.4 |
NTT Communications Global IP Network started IPv6/IPv4 Dual Service. |
| 2004.10 |
Official introduction of OCN ADSL Service IPv6 Dual (A). |
| 2004.10 |
NTT Com won the "Best Global Carrier" and "Best New Service" awards at World Communication Awards 2004. |
| 2005.2 |
Launching of OCN IPv4/IPv6 dual stack service for full-scale use of IPv6. |
| 2005.12 |
OCN IPv6 service for home use begins. |
| 2007.8 |
IPv6 Multi-Policy VPN Service Announced |
NTT Communications CSR Report
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