What this means
The IEEE assigned the MA-S block 70B3D5F9E to International Center for Elementary Particle Physics, The University of Tokyo. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 70:B3:D5:F9:E, it is International Center for Elementary Particle Physics, The University of Tokyo hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5F9E?
70B3D5F9E is registered to International Center for Elementary Particle Physics, The University of Tokyo in the IEEE MA-S registry.
What does the MA-S registry type mean?
An MA-S assignment, formerly called OUI-36, covers 36 bits, giving the vendor 4,096 device addresses, the smallest block the IEEE issues. International Center for Elementary Particle Physics, The University of Tokyo's block covers 4,096 addresses.
What devices use 70B3D5F9E?
Any network device with a MAC address starting 70:B3:D5:F9:E was manufactured by or for International Center for Elementary Particle Physics, The University of Tokyo.