What this means
The IEEE assigned the MA-L block CC19A8 to PT Inovação e Sistemas SA. 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:19:A8, it is PT Inovação e Sistemas SA hardware.
Frequently Asked Questions
Who owns MAC prefix CC19A8?
CC19A8 is registered to PT Inovação e Sistemas SA 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. PT Inovação e Sistemas SA's block covers 16,777,216 addresses.
What devices use CC19A8?
Any network device with a MAC address starting CC:19:A8 was manufactured by or for PT Inovação e Sistemas SA.