Who owns MAC prefix 00233B?

00233B is registered to C-Matic Systems Ltd in the IEEE MA-L registry.

What devices use 00233B?

Any network device with a MAC address starting 00:23:3B was manufactured by or for C-Matic Systems Ltd.

MA-L · OUI prefix

C-Matic Systems Ltd

Any MAC address starting 00:23:3B is registered to C-Matic Systems Ltd.

OUI prefix	00233B
Vendor	C-Matic Systems Ltd
Registry	MA-L (24-bit, large block)
Example MAC	00:23:3B:00:00:00

What this means

The IEEE assigned the MA-L block 00233B to C-Matic 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 00:23:3B, it is C-Matic Systems Ltd hardware.

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