What this means
The IEEE assigned the MA-L block 0003B4 to Macrotek International Corp.. 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 00:03:B4, it is Macrotek International Corp. hardware.
Frequently Asked Questions
Who owns MAC prefix 0003B4?
0003B4 is registered to Macrotek International Corp. 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. Macrotek International Corp.'s block covers 16,777,216 addresses.
What devices use 0003B4?
Any network device with a MAC address starting 00:03:B4 was manufactured by or for Macrotek International Corp..