Who owns MAC prefix D425CC3?

D425CC3 is registered to EISST Ltd in the IEEE MA-M registry.

What devices use D425CC3?

Any network device with a MAC address starting D4:25:CC:3 was manufactured by or for EISST Ltd.

MA-M · OUI prefix

EISST Ltd

Any MAC address starting D4:25:CC:3 is registered to EISST Ltd.

OUI prefix	D425CC3
Vendor	EISST Ltd
Registry	MA-M (28-bit, medium block)
Example MAC	D4:25:CC:3:00:00:00

What this means

The IEEE assigned the MA-M block D425CC3 to EISST 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 D4:25:CC:3, it is EISST Ltd hardware.

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