What this means
The IEEE assigned the MA-L block 78888A to CDR Sp. z o.o. Sp. k.. 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 78:88:8A, it is CDR Sp. z o.o. Sp. k. hardware.
Frequently Asked Questions
Who owns MAC prefix 78888A?
78888A is registered to CDR Sp. z o.o. Sp. k. 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. CDR Sp. z o.o. Sp. k.'s block covers 16,777,216 addresses.
What devices use 78888A?
Any network device with a MAC address starting 78:88:8A was manufactured by or for CDR Sp. z o.o. Sp. k..