Who owns MAC prefix 4C90DB?

4C90DB is registered to JL Audio in the IEEE MA-L registry.

What devices use 4C90DB?

Any network device with a MAC address starting 4C:90:DB was manufactured by or for JL Audio.

MA-L · OUI prefix

JL Audio

Any MAC address starting 4C:90:DB is registered to JL Audio in US.

OUI prefix	4C90DB
Vendor	JL Audio
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	4C:90:DB:00:00:00

What this means

The IEEE assigned the MA-L block 4C90DB to JL Audio. 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 4C:90:DB, it is JL Audio hardware.

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