What this means
The IEEE assigned the MA-L block 349D90 to Heinzmann GmbH & CO. KG. 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 34:9D:90, it is Heinzmann GmbH & CO. KG hardware.
Frequently Asked Questions
Who owns MAC prefix 349D90?
349D90 is registered to Heinzmann GmbH & CO. KG 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. Heinzmann GmbH & CO. KG's block covers 16,777,216 addresses.
What devices use 349D90?
Any network device with a MAC address starting 34:9D:90 was manufactured by or for Heinzmann GmbH & CO. KG.