What this means
The IEEE assigned the MA-L block 407875 to IMBEL - Industria de Material Belico do Brasil. 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 40:78:75, it is IMBEL - Industria de Material Belico do Brasil hardware.
Frequently Asked Questions
Who owns MAC prefix 407875?
407875 is registered to IMBEL - Industria de Material Belico do Brasil 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. IMBEL - Industria de Material Belico do Brasil's block covers 16,777,216 addresses.
What devices use 407875?
Any network device with a MAC address starting 40:78:75 was manufactured by or for IMBEL - Industria de Material Belico do Brasil.