What this means
The IEEE assigned the MA-L block 50B140 to ELPROMA ELEKTRONIKA SP Z O O. 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 50:B1:40, it is ELPROMA ELEKTRONIKA SP Z O O hardware.
Frequently Asked Questions
Who owns MAC prefix 50B140?
50B140 is registered to ELPROMA ELEKTRONIKA SP Z O O 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. ELPROMA ELEKTRONIKA SP Z O O's block covers 16,777,216 addresses.
What devices use 50B140?
Any network device with a MAC address starting 50:B1:40 was manufactured by or for ELPROMA ELEKTRONIKA SP Z O O.