What devices use 204181?

Any network device with a MAC address starting 20:41:81 was manufactured by or for ESYSE GmbH Embedded Systems Engineering.

MA-L · OUI prefix

ESYSE GmbH Embedded Systems Engineering

Q: Who owns MAC prefix 204181?

204181 is registered to ESYSE GmbH Embedded Systems Engineering in the IEEE MA-L registry.

Any MAC address starting 20:41:81 is registered to ESYSE GmbH Embedded Systems Engineering in DE.

OUI prefix	204181
Vendor	ESYSE GmbH Embedded Systems Engineering
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	20:41:81:00:00:00

What this means

The IEEE assigned the MA-L block 204181 to ESYSE GmbH Embedded Systems Engineering. 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 20:41:81, it is ESYSE GmbH Embedded Systems Engineering hardware.

Other ESYSE GmbH Embedded Systems Engineering prefixes

ESYSE GmbH Embedded Systems Engineering holds 2 registered blocks in total.

70B3D5008

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