What this means
The IEEE assigned the MA-S block 70B3D5FBF to SenSys (Design Electronics Ltd). 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:FB:F, it is SenSys (Design Electronics Ltd) hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5FBF?
70B3D5FBF is registered to SenSys (Design Electronics Ltd) 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. SenSys (Design Electronics Ltd)'s block covers 4,096 addresses.
What devices use 70B3D5FBF?
Any network device with a MAC address starting 70:B3:D5:FB:F was manufactured by or for SenSys (Design Electronics Ltd).