Who owns MAC prefix A81758?

A81758 is registered to Elektronik System i Umeå AB in the IEEE MA-L registry.

What devices use A81758?

Any network device with a MAC address starting A8:17:58 was manufactured by or for Elektronik System i Umeå AB.

MA-L · OUI prefix

Elektronik System i Umeå AB

Any MAC address starting A8:17:58 is registered to Elektronik System i Umeå AB.

OUI prefix	A81758
Vendor	Elektronik System i Umeå AB
Registry	MA-L (24-bit, large block)
Example MAC	A8:17:58:00:00:00

What this means

The IEEE assigned the MA-L block A81758 to Elektronik System i Umeå AB. 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 A8:17:58, it is Elektronik System i Umeå AB hardware.

Look up another MAC