What this means
The IEEE assigned the MA-M block 7CE4A1B to Cummins 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 7C:E4:A1:B, it is Cummins Inc hardware.
Frequently Asked Questions
Who owns MAC prefix 7CE4A1B?
7CE4A1B is registered to Cummins Inc in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Cummins Inc's block covers 1,048,576 addresses.
What devices use 7CE4A1B?
Any network device with a MAC address starting 7C:E4:A1:B was manufactured by or for Cummins Inc.