What this means
The IEEE assigned the MA-M block 1C87749 to Wide World Trade HK 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 1C:87:74:9, it is Wide World Trade HK ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 1C87749?
1C87749 is registered to Wide World Trade HK ltd. 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. Wide World Trade HK ltd.'s block covers 1,048,576 addresses.
What devices use 1C87749?
Any network device with a MAC address starting 1C:87:74:9 was manufactured by or for Wide World Trade HK ltd..