Who owns MAC prefix 38315A?

38315A is registered to Rinnai in the IEEE MA-L registry.

What devices use 38315A?

Any network device with a MAC address starting 38:31:5A was manufactured by or for Rinnai.

MA-L · OUI prefix

Rinnai

Any MAC address starting 38:31:5A is registered to Rinnai in US.

OUI prefix	38315A
Vendor	Rinnai
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	38:31:5A:00:00:00

What this means

The IEEE assigned the MA-L block 38315A to Rinnai. 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 38:31:5A, it is Rinnai hardware.

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