What this means
The IEEE assigned the MA-L block 345B11 to EVI HEAT AB. 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 34:5B:11, it is EVI HEAT AB hardware.
Frequently Asked Questions
Who owns MAC prefix 345B11?
345B11 is registered to EVI HEAT AB 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. EVI HEAT AB's block covers 16,777,216 addresses.
What devices use 345B11?
Any network device with a MAC address starting 34:5B:11 was manufactured by or for EVI HEAT AB.