What this means
The IEEE assigned the MA-L block 003023 to COGENT COMPUTER 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 00:30:23, it is COGENT COMPUTER SYSTEMS, INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 003023?
003023 is registered to COGENT COMPUTER 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. COGENT COMPUTER SYSTEMS, INC.'s block covers 16,777,216 addresses.
What devices use 003023?
Any network device with a MAC address starting 00:30:23 was manufactured by or for COGENT COMPUTER SYSTEMS, INC..