What this means
The IEEE assigned the MA-L block 803457 to OT Systems Limited. 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 80:34:57, it is OT Systems Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 803457?
803457 is registered to OT Systems Limited 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. OT Systems Limited's block covers 16,777,216 addresses.
What devices use 803457?
Any network device with a MAC address starting 80:34:57 was manufactured by or for OT Systems Limited.