What this means
The IEEE assigned the MA-L block CCC5EF to Co-Comm Servicios Telecomunicaciones S.L.. 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 CC:C5:EF, it is Co-Comm Servicios Telecomunicaciones S.L. hardware.
Frequently Asked Questions
Who owns MAC prefix CCC5EF?
CCC5EF is registered to Co-Comm Servicios Telecomunicaciones S.L. 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. Co-Comm Servicios Telecomunicaciones S.L.'s block covers 16,777,216 addresses.
What devices use CCC5EF?
Any network device with a MAC address starting CC:C5:EF was manufactured by or for Co-Comm Servicios Telecomunicaciones S.L..