What this means
The IEEE assigned the MA-L block 004057 to LOCKHEED - SANDERS. 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 00:40:57, it is LOCKHEED - SANDERS hardware.
Frequently Asked Questions
Who owns MAC prefix 004057?
004057 is registered to LOCKHEED - SANDERS 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. LOCKHEED - SANDERS's block covers 16,777,216 addresses.
What devices use 004057?
Any network device with a MAC address starting 00:40:57 was manufactured by or for LOCKHEED - SANDERS.