Who owns MAC prefix 0040E3?

0040E3 is registered to QUIN SYSTEMS LTD in the IEEE MA-L registry.

What devices use 0040E3?

Any network device with a MAC address starting 00:40:E3 was manufactured by or for QUIN SYSTEMS LTD.

MA-L · OUI prefix

QUIN SYSTEMS LTD

Any MAC address starting 00:40:E3 is registered to QUIN SYSTEMS LTD in GB.

OUI prefix	0040E3
Vendor	QUIN SYSTEMS LTD
Registry	MA-L (24-bit, large block)
Country	GB
Example MAC	00:40:E3:00:00:00

What this means

The IEEE assigned the MA-L block 0040E3 to QUIN 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 00:40:E3, it is QUIN SYSTEMS LTD hardware.

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