Who owns MAC prefix 0050B3?

0050B3 is registered to VOICEBOARD CORPORATION in the IEEE MA-L registry.

What devices use 0050B3?

Any network device with a MAC address starting 00:50:B3 was manufactured by or for VOICEBOARD CORPORATION.

MA-L · OUI prefix

VOICEBOARD CORPORATION

Any MAC address starting 00:50:B3 is registered to VOICEBOARD CORPORATION in US.

OUI prefix	0050B3
Vendor	VOICEBOARD CORPORATION
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:50:B3:00:00:00

What this means

The IEEE assigned the MA-L block 0050B3 to VOICEBOARD CORPORATION. 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 00:50:B3, it is VOICEBOARD CORPORATION hardware.

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