Who owns MAC prefix 0040A1?

0040A1 is registered to ERGO COMPUTING in the IEEE MA-L registry.

What devices use 0040A1?

Any network device with a MAC address starting 00:40:A1 was manufactured by or for ERGO COMPUTING.

MA-L · OUI prefix

ERGO COMPUTING

Any MAC address starting 00:40:A1 is registered to ERGO COMPUTING in US.

OUI prefix	0040A1
Vendor	ERGO COMPUTING
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:40:A1:00:00:00

What this means

The IEEE assigned the MA-L block 0040A1 to ERGO COMPUTING. 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:A1, it is ERGO COMPUTING hardware.

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