Yoshinobu Matsuzaki is a Senior Engineer at Internet Initiative Japan Inc. (IIJ/AS2497), a pioneering commercial ISP in Japan. He has decades of network operation experience with the IIJ backbone network team. His areas of expertise include network design, network operation, network security, and DNS. He has given numerous talks at JANOG, bdNOG, RIPE, and APNIC meetings, as well as other workshops.