What this means
The IEEE assigned the MA-L block 7891E9 to Raisecom Technology CO., LTD. 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 78:91:E9, it is Raisecom Technology CO., LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 7891E9?
7891E9 is registered to Raisecom Technology CO., LTD 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. Raisecom Technology CO., LTD's block covers 16,777,216 addresses.
What devices use 7891E9?
Any network device with a MAC address starting 78:91:E9 was manufactured by or for Raisecom Technology CO., LTD.