What this means
The IEEE assigned the MA-M block 04D16EB to National Radio & Telecommunication Corporation - NRTC. 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:D1:6E:B, it is National Radio & Telecommunication Corporation - NRTC hardware.
Frequently Asked Questions
Who owns MAC prefix 04D16EB?
04D16EB is registered to National Radio & Telecommunication Corporation - NRTC 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. National Radio & Telecommunication Corporation - NRTC's block covers 1,048,576 addresses.
What devices use 04D16EB?
Any network device with a MAC address starting 04:D1:6E:B was manufactured by or for National Radio & Telecommunication Corporation - NRTC.