Who owns MAC prefix A0C5F20?

A0C5F20 is registered to Quantlab Financial, LLC in the IEEE MA-M registry.

What devices use A0C5F20?

Any network device with a MAC address starting A0:C5:F2:0 was manufactured by or for Quantlab Financial, LLC.

MA-M · OUI prefix

Quantlab Financial, LLC

Any MAC address starting A0:C5:F2:0 is registered to Quantlab Financial, LLC in US.

OUI prefix	A0C5F20
Vendor	Quantlab Financial, LLC
Registry	MA-M (28-bit, medium block)
Country	US
Example MAC	A0:C5:F2:0:00:00:00

What this means

The IEEE assigned the MA-M block A0C5F20 to Quantlab Financial, LLC. 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:C5:F2:0, it is Quantlab Financial, LLC hardware.

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