Who owns MAC prefix 00025D?

00025D is registered to Calix Networks in the IEEE MA-L registry.

What devices use 00025D?

Any network device with a MAC address starting 00:02:5D was manufactured by or for Calix Networks.

MA-L · OUI prefix

Calix Networks

Any MAC address starting 00:02:5D is registered to Calix Networks in US.

OUI prefix	00025D
Vendor	Calix Networks
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:02:5D:00:00:00

What this means

The IEEE assigned the MA-L block 00025D to Calix Networks. 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 00:02:5D, it is Calix Networks hardware.

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