Who owns MAC prefix 00A0A3?

00A0A3 is registered to RELIABLE POWER METERS in the IEEE MA-L registry.

What devices use 00A0A3?

Any network device with a MAC address starting 00:A0:A3 was manufactured by or for RELIABLE POWER METERS.

MA-L · OUI prefix

RELIABLE POWER METERS

Any MAC address starting 00:A0:A3 is registered to RELIABLE POWER METERS in US.

OUI prefix	00A0A3
Vendor	RELIABLE POWER METERS
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:A0:A3:00:00:00

What this means

The IEEE assigned the MA-L block 00A0A3 to RELIABLE POWER METERS. 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:A0:A3, it is RELIABLE POWER METERS hardware.

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