What this means
The IEEE assigned the MA-L block DC1DD4 to Microstep-MIS spol. 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 DC:1D:D4, it is Microstep-MIS spol. s r.o. hardware.
Frequently Asked Questions
Who owns MAC prefix DC1DD4?
DC1DD4 is registered to Microstep-MIS spol. s r.o. 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. Microstep-MIS spol. s r.o.'s block covers 16,777,216 addresses.
What devices use DC1DD4?
Any network device with a MAC address starting DC:1D:D4 was manufactured by or for Microstep-MIS spol. s r.o..