What this means
The IEEE assigned the MA-L block 00303B to PowerCom Technology. 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 00:30:3B, it is PowerCom Technology hardware.
Frequently Asked Questions
Who owns MAC prefix 00303B?
00303B is registered to PowerCom Technology 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. PowerCom Technology's block covers 16,777,216 addresses.
What devices use 00303B?
Any network device with a MAC address starting 00:30:3B was manufactured by or for PowerCom Technology.