What this means
The IEEE assigned the MA-S block 70B3D519F to Koizumi Lighting Technology Corp.. 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:D5:19:F, it is Koizumi Lighting Technology Corp. hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D519F?
70B3D519F is registered to Koizumi Lighting Technology Corp. 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. Koizumi Lighting Technology Corp.'s block covers 4,096 addresses.
What devices use 70B3D519F?
Any network device with a MAC address starting 70:B3:D5:19:F was manufactured by or for Koizumi Lighting Technology Corp..