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