What this means
The IEEE assigned the MA-S block 70B3D556E to Power Electronics Espana, S.L.. 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:D5:56:E, it is Power Electronics Espana, S.L. hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D556E?
70B3D556E is registered to Power Electronics Espana, S.L. 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. Power Electronics Espana, S.L.'s block covers 4,096 addresses.
What devices use 70B3D556E?
Any network device with a MAC address starting 70:B3:D5:56:E was manufactured by or for Power Electronics Espana, S.L..