What this means
The IEEE assigned the MA-L block C4E17C to U2S co.. 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:E1:7C, it is U2S co. hardware.
Frequently Asked Questions
Who owns MAC prefix C4E17C?
C4E17C is registered to U2S co. 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. U2S co.'s block covers 16,777,216 addresses.
What devices use C4E17C?
Any network device with a MAC address starting C4:E1:7C was manufactured by or for U2S co..