What this means
The IEEE assigned the MA-L block C0188C to Altus Sistemas de Automação S.A.. 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 C0:18:8C, it is Altus Sistemas de Automação S.A. hardware.
Frequently Asked Questions
Who owns MAC prefix C0188C?
C0188C is registered to Altus Sistemas de Automação S.A. 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. Altus Sistemas de Automação S.A.'s block covers 16,777,216 addresses.
What devices use C0188C?
Any network device with a MAC address starting C0:18:8C was manufactured by or for Altus Sistemas de Automação S.A..