What this means
The IEEE assigned the MA-L block 000B5B to Rincon Research Corporation. 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 00:0B:5B, it is Rincon Research Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 000B5B?
000B5B is registered to Rincon Research Corporation 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. Rincon Research Corporation's block covers 16,777,216 addresses.
What devices use 000B5B?
Any network device with a MAC address starting 00:0B:5B was manufactured by or for Rincon Research Corporation.