Who owns MAC prefix 043604?

043604 is registered to Gyeyoung I&T in the IEEE MA-L registry.

What devices use 043604?

Any network device with a MAC address starting 04:36:04 was manufactured by or for Gyeyoung I&T.

MA-L · OUI prefix

Gyeyoung I&T

Any MAC address starting 04:36:04 is registered to Gyeyoung I&T in KR.

OUI prefix	043604
Vendor	Gyeyoung I&T
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	04:36:04:00:00:00

What this means

The IEEE assigned the MA-L block 043604 to Gyeyoung I&T. 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 04:36:04, it is Gyeyoung I&T hardware.

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