What this means
The IEEE assigned the MA-M block 04C3E67 to Advanced Digital Technologies, 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 04:C3:E6:7, it is Advanced Digital Technologies, s.r.o. hardware.
Frequently Asked Questions
Who owns MAC prefix 04C3E67?
04C3E67 is registered to Advanced Digital Technologies, 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. Advanced Digital Technologies, s.r.o.'s block covers 1,048,576 addresses.
What devices use 04C3E67?
Any network device with a MAC address starting 04:C3:E6:7 was manufactured by or for Advanced Digital Technologies, s.r.o..