What this means
The IEEE assigned the MA-L block D82D40 to Janz - Contagem e Gestão de Fluídos S.A.. 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 D8:2D:40, it is Janz - Contagem e Gestão de Fluídos S.A. hardware.
Frequently Asked Questions
Who owns MAC prefix D82D40?
D82D40 is registered to Janz - Contagem e Gestão de Fluídos S.A. 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. Janz - Contagem e Gestão de Fluídos S.A.'s block covers 16,777,216 addresses.
What devices use D82D40?
Any network device with a MAC address starting D8:2D:40 was manufactured by or for Janz - Contagem e Gestão de Fluídos S.A..