Who owns MAC prefix 003003?

003003 is registered to Phasys Ltd. in the IEEE MA-L registry.

What devices use 003003?

Any network device with a MAC address starting 00:30:03 was manufactured by or for Phasys Ltd..

MA-L · OUI prefix

Phasys Ltd.

Any MAC address starting 00:30:03 is registered to Phasys Ltd. in CA.

OUI prefix	003003
Vendor	Phasys Ltd.
Registry	MA-L (24-bit, large block)
Country	CA
Example MAC	00:30:03:00:00:00

What this means

The IEEE assigned the MA-L block 003003 to Phasys Ltd.. 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 00:30:03, it is Phasys Ltd. hardware.

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