What this means
The IEEE assigned the MA-L block 34D7B4 to Tributary 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 34:D7:B4, it is Tributary Systems, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 34D7B4?
34D7B4 is registered to Tributary 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. Tributary Systems, Inc.'s block covers 16,777,216 addresses.
What devices use 34D7B4?
Any network device with a MAC address starting 34:D7:B4 was manufactured by or for Tributary Systems, Inc..