Who owns MAC prefix 70B3D55C6?

70B3D55C6 is registered to C4I Systems Ltd in the IEEE MA-S registry.

What devices use 70B3D55C6?

Any network device with a MAC address starting 70:B3:D5:5C:6 was manufactured by or for C4I Systems Ltd.

MA-S · OUI prefix

C4I Systems Ltd

Any MAC address starting 70:B3:D5:5C:6 is registered to C4I Systems Ltd.

OUI prefix	70B3D55C6
Vendor	C4I Systems Ltd
Registry	MA-S (36-bit, small block)
Example MAC	70:B3:D5:5C:6:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D55C6 to C4I Systems 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:D5:5C:6, it is C4I Systems Ltd hardware.

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