What this means
The IEEE assigned the MA-L block 00C0B5 to CORPORATE NETWORK SYSTEMS,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:C0:B5, it is CORPORATE NETWORK SYSTEMS,INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 00C0B5?
00C0B5 is registered to CORPORATE NETWORK SYSTEMS,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. CORPORATE NETWORK SYSTEMS,INC.'s block covers 16,777,216 addresses.
What devices use 00C0B5?
Any network device with a MAC address starting 00:C0:B5 was manufactured by or for CORPORATE NETWORK SYSTEMS,INC..