What this means
The IEEE assigned the MA-M block 745BC5A to Fournie Grospaud Energie SASU. 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 74:5B:C5:A, it is Fournie Grospaud Energie SASU hardware.
Frequently Asked Questions
Who owns MAC prefix 745BC5A?
745BC5A is registered to Fournie Grospaud Energie SASU 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. Fournie Grospaud Energie SASU's block covers 1,048,576 addresses.
What devices use 745BC5A?
Any network device with a MAC address starting 74:5B:C5:A was manufactured by or for Fournie Grospaud Energie SASU.