Who owns MAC prefix 8C55709?

8C55709 is registered to Neptronic Ltd in the IEEE MA-M registry.

What devices use 8C55709?

Any network device with a MAC address starting 8C:55:70:9 was manufactured by or for Neptronic Ltd.

MA-M · OUI prefix

Neptronic Ltd

Any MAC address starting 8C:55:70:9 is registered to Neptronic Ltd.

OUI prefix	8C55709
Vendor	Neptronic Ltd
Registry	MA-M (28-bit, medium block)
Example MAC	8C:55:70:9:00:00:00

What this means

The IEEE assigned the MA-M block 8C55709 to Neptronic 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 8C:55:70:9, it is Neptronic Ltd hardware.

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