What this means
The IEEE assigned the MA-L block 540237 to Teltronic AG. 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 54:02:37, it is Teltronic AG hardware.
Frequently Asked Questions
Who owns MAC prefix 540237?
540237 is registered to Teltronic AG 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. Teltronic AG's block covers 16,777,216 addresses.
What devices use 540237?
Any network device with a MAC address starting 54:02:37 was manufactured by or for Teltronic AG.