What this means
The IEEE assigned the MA-L block 0020B1 to COMTECH RESEARCH INC.. 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 00:20:B1, it is COMTECH RESEARCH INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 0020B1?
0020B1 is registered to COMTECH RESEARCH INC. 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. COMTECH RESEARCH INC.'s block covers 16,777,216 addresses.
What devices use 0020B1?
Any network device with a MAC address starting 00:20:B1 was manufactured by or for COMTECH RESEARCH INC..