Who owns MAC prefix B430C0?

B430C0 is registered to York Instruments Ltd in the IEEE MA-L registry.

What devices use B430C0?

Any network device with a MAC address starting B4:30:C0 was manufactured by or for York Instruments Ltd.

MA-L · OUI prefix

York Instruments Ltd

Any MAC address starting B4:30:C0 is registered to York Instruments Ltd.

OUI prefix	B430C0
Vendor	York Instruments Ltd
Registry	MA-L (24-bit, large block)
Example MAC	B4:30:C0:00:00:00

What this means

The IEEE assigned the MA-L block B430C0 to York Instruments 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 B4:30:C0, it is York Instruments Ltd hardware.

Look up another MAC