Who owns MAC prefix 000203?

000203 is registered to Woonsang Telecom, Inc. in the IEEE MA-L registry.

What devices use 000203?

Any network device with a MAC address starting 00:02:03 was manufactured by or for Woonsang Telecom, Inc..

MA-L · OUI prefix

Woonsang Telecom, Inc.

Any MAC address starting 00:02:03 is registered to Woonsang Telecom, Inc. in KR.

OUI prefix	000203
Vendor	Woonsang Telecom, Inc.
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	00:02:03:00:00:00

What this means

The IEEE assigned the MA-L block 000203 to Woonsang Telecom, Inc.. 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 00:02:03, it is Woonsang Telecom, Inc. hardware.

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