Who owns MAC prefix 8C5DB27?

8C5DB27 is registered to Cleartex s.r.o. in the IEEE MA-M registry.

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..

MA-M · OUI prefix

Cleartex s.r.o.

Any MAC address starting 8C:5D:B2:7 is registered to Cleartex s.r.o. in CZ.

OUI prefix	8C5DB27
Vendor	Cleartex s.r.o.
Registry	MA-M (28-bit, medium block)
Country	CZ
Example MAC	8C:5D:B2:7:00:00:00

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.

Look up another MAC