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.
Frequently Asked Questions
Who owns MAC prefix 00A020?
00A020 is registered to CITICORP/TTI in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. CITICORP/TTI's block covers 16,777,216 addresses.
What devices use 00A020?
Any network device with a MAC address starting 00:A0:20 was manufactured by or for CITICORP/TTI.