What this means
The IEEE assigned the MA-L block 78D9E9 to MOMENTUM IOT. 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 78:D9:E9, it is MOMENTUM IOT hardware.
Frequently Asked Questions
Who owns MAC prefix 78D9E9?
78D9E9 is registered to MOMENTUM IOT 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. MOMENTUM IOT's block covers 16,777,216 addresses.
What devices use 78D9E9?
Any network device with a MAC address starting 78:D9:E9 was manufactured by or for MOMENTUM IOT.