Who owns MAC prefix 703C39?

703C39 is registered to SEAWING Kft in the IEEE MA-L registry.

What devices use 703C39?

Any network device with a MAC address starting 70:3C:39 was manufactured by or for SEAWING Kft.

MA-L · OUI prefix

SEAWING Kft

Any MAC address starting 70:3C:39 is registered to SEAWING Kft in HU.

OUI prefix	703C39
Vendor	SEAWING Kft
Registry	MA-L (24-bit, large block)
Country	HU
Example MAC	70:3C:39:00:00:00

What this means

The IEEE assigned the MA-L block 703C39 to SEAWING Kft. 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 70:3C:39, it is SEAWING Kft hardware.

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