What this means
The IEEE assigned the MA-S block 001BC50B9 to Denki Kogyo Company, 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 00:1B:C5:0B:9, it is Denki Kogyo Company, Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 001BC50B9?
001BC50B9 is registered to Denki Kogyo Company, Limited in the IEEE MA-S registry.
What does the MA-S registry type mean?
An MA-S assignment, formerly called OUI-36, covers 36 bits, giving the vendor 4,096 device addresses, the smallest block the IEEE issues. Denki Kogyo Company, Limited's block covers 4,096 addresses.
What devices use 001BC50B9?
Any network device with a MAC address starting 00:1B:C5:0B:9 was manufactured by or for Denki Kogyo Company, Limited.