What this means
The IEEE assigned the MA-L block D428B2 to ioBridge, 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 D4:28:B2, it is ioBridge, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix D428B2?
D428B2 is registered to ioBridge, 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. ioBridge, Inc.'s block covers 16,777,216 addresses.
What devices use D428B2?
Any network device with a MAC address starting D4:28:B2 was manufactured by or for ioBridge, Inc..