IPv4 address pool reached the exhaustion phase on February 2011. Therefore, IPv6, the next version of the protocol, has begun to be utilized gradually. We put the information of IPv6 deployment situation in Japan together on this page.

IPv6 related information by JPNIC

List and Statistics	Changes of address allocation number of IPv6 managed by JPNIC
	IPv6 address list managed by JPNIC (in Japanese)
	List of IP Address Management Agents who were allocated IPv6 address (in Japanese)
Survey	Questionnaire about the IPv6 support status (as of Feb.2015) (in Japanese) This is the result of survey that was asked to JPNIC members, IP address management agents and PI address holders. JPNIC conducted this survey from 21st January to 20th February 2015.

IPv6 related information by other organizations

Ministry of Internal Affairs and Communications (MIC)	IPv6 support guideline [for small and medium-sized telecom operators] (in Japanese) IPv6 support guideline [for enterprises] (in Japanese) IPv6 support guideline [for local governments] (in Japanese) Model of IPv6 support procurement specification [for enterprises] (in Japanese) Model of IPv6 support procurement specification [for local governments](in Japanese) Second Progress Report Released by Study Group on Advanced Use of Internet with IPv6 (in Japanese) Press Release Report (in Japanese)
IPv6 Promotion Council	IPv6 Dissemination situation in Japan
Other Statistics	IPv6 Deployment Aggregated Status - vyncke.org IPv6 Deployment Aggregated Status in Japan - vyncke.org CISCO 6lab IPv6 - Google