What this means
The IEEE assigned the MA-M block 8C5DB27 to Cleartex s.r.o.. 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 8C:5D:B2:7, it is Cleartex s.r.o. hardware.
Frequently Asked Questions
Who owns MAC prefix 8C5DB27?
8C5DB27 is registered to Cleartex s.r.o. in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Cleartex s.r.o.'s block covers 1,048,576 addresses.
What devices use 8C5DB27?
Any network device with a MAC address starting 8C:5D:B2:7 was manufactured by or for Cleartex s.r.o..