What this means
The IEEE assigned the MA-L block E4C90B to Radwin. 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 E4:C9:0B, it is Radwin hardware.
Frequently Asked Questions
Who owns MAC prefix E4C90B?
E4C90B is registered to Radwin 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. Radwin's block covers 16,777,216 addresses.
What devices use E4C90B?
Any network device with a MAC address starting E4:C9:0B was manufactured by or for Radwin.