What this means
The IEEE assigned the MA-L block 687CD5 to Y Soft Corporation, a.s.. 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 68:7C:D5, it is Y Soft Corporation, a.s. hardware.
Frequently Asked Questions
Who owns MAC prefix 687CD5?
687CD5 is registered to Y Soft Corporation, a.s. 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. Y Soft Corporation, a.s.'s block covers 16,777,216 addresses.
What devices use 687CD5?
Any network device with a MAC address starting 68:7C:D5 was manufactured by or for Y Soft Corporation, a.s..