Who owns MAC prefix 00A020?

00A020 is registered to CITICORP/TTI in the IEEE MA-L registry.

What devices use 00A020?

Any network device with a MAC address starting 00:A0:20 was manufactured by or for CITICORP/TTI.

MA-L · OUI prefix

CITICORP/TTI

Any MAC address starting 00:A0:20 is registered to CITICORP/TTI in US.

OUI prefix	00A020
Vendor	CITICORP/TTI
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:A0:20:00:00:00

What this means

The IEEE assigned the MA-L block 00A020 to CITICORP/TTI. 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 00:A0:20, it is CITICORP/TTI hardware.

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