What this means
The IEEE assigned the MA-S block 70B3D5EEE to SOCIEDAD IBERICA DE CONSTRUCCIONES ELECTRICAS, S.A. (SICE). 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:EE:E, it is SOCIEDAD IBERICA DE CONSTRUCCIONES ELECTRICAS, S.A. (SICE) hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5EEE?
70B3D5EEE is registered to SOCIEDAD IBERICA DE CONSTRUCCIONES ELECTRICAS, S.A. (SICE) 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. SOCIEDAD IBERICA DE CONSTRUCCIONES ELECTRICAS, S.A. (SICE)'s block covers 4,096 addresses.
What devices use 70B3D5EEE?
Any network device with a MAC address starting 70:B3:D5:EE:E was manufactured by or for SOCIEDAD IBERICA DE CONSTRUCCIONES ELECTRICAS, S.A. (SICE).