What this means
The IEEE assigned the MA-S block 70B3D5446 to Santa Barbara Imaging Systems. 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:D5:44:6, it is Santa Barbara Imaging Systems hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5446?
70B3D5446 is registered to Santa Barbara Imaging Systems 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. Santa Barbara Imaging Systems's block covers 4,096 addresses.
What devices use 70B3D5446?
Any network device with a MAC address starting 70:B3:D5:44:6 was manufactured by or for Santa Barbara Imaging Systems.