What this means

The IEEE assigned the MA-L block 001FD2 to COMMTECH TECHNOLOGY MACAO COMMERCIAL OFFSHORE LTD.. 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 00:1F:D2, it is COMMTECH TECHNOLOGY MACAO COMMERCIAL OFFSHORE LTD. hardware.