Who owns MAC prefix A028334?

A028334 is registered to Firm INFORMTEST Ltd. in the IEEE MA-M registry.

What devices use A028334?

Any network device with a MAC address starting A0:28:33:4 was manufactured by or for Firm INFORMTEST Ltd..

MA-M · OUI prefix

Firm INFORMTEST Ltd.

Any MAC address starting A0:28:33:4 is registered to Firm INFORMTEST Ltd. in RU.

OUI prefix	A028334
Vendor	Firm INFORMTEST Ltd.
Registry	MA-M (28-bit, medium block)
Country	RU
Example MAC	A0:28:33:4:00:00:00

What this means

The IEEE assigned the MA-M block A028334 to Firm INFORMTEST 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 A0:28:33:4, it is Firm INFORMTEST Ltd. hardware.

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