(Translated by https://www.hiragana.jp/)
Hurricane Electric Internet Services - Internet Backbone and Colocation Provider
The Wayback Machine - https://web.archive.org/web/20161028045801/http://www.he.net/
Hurricane Electric
Hurricane Electric IP Transit

Our Global Internet Backbone provides IP Transit with low latency, access to thousands of networks, and dual-stack native IPv6+IPv4.

Global IPv6 & IPv4 Internet Transit
Free IPv6 Certifications!

This tool will allow you to certify your ability to configure IPv6.

http://ipv6.he.net/certification
Tunnel Broker

"Our free tunnel broker service enables you to reach the IPv6 Internet by tunneling over existing IPv4 connections from your IPv6 enabled host or router to one of our IPv6 routers. Try it now!"

http://tunnelbroker.net

Colocation