What this means
The IEEE assigned the MA-S block 70B3D51F3 to Smart Energy Code Company Limited. 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:D5:1F:3, it is Smart Energy Code Company Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D51F3?
70B3D51F3 is registered to Smart Energy Code Company Limited 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. Smart Energy Code Company Limited's block covers 4,096 addresses.
What devices use 70B3D51F3?
Any network device with a MAC address starting 70:B3:D5:1F:3 was manufactured by or for Smart Energy Code Company Limited.