What this means
The IEEE assigned the MA-L block C4B25B to Ruijie Networks 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 C4:B2:5B, it is Ruijie Networks Co.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix C4B25B?
C4B25B is registered to Ruijie Networks 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. Ruijie Networks Co.,LTD's block covers 16,777,216 addresses.
What devices use C4B25B?
Any network device with a MAC address starting C4:B2:5B was manufactured by or for Ruijie Networks Co.,LTD.