Who owns MAC prefix 0004C5?

0004C5 is registered to ASE Technologies, USA in the IEEE MA-L registry.

What devices use 0004C5?

Any network device with a MAC address starting 00:04:C5 was manufactured by or for ASE Technologies, USA.

MA-L · OUI prefix

ASE Technologies, USA

Any MAC address starting 00:04:C5 is registered to ASE Technologies, USA in US.

OUI prefix	0004C5
Vendor	ASE Technologies, USA
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:04:C5:00:00:00

What this means

The IEEE assigned the MA-L block 0004C5 to ASE Technologies, USA. 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 00:04:C5, it is ASE Technologies, USA hardware.

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