What this means
The IEEE assigned the MA-L block 001CD9 to GlobalTop Technology Inc.. 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 00:1C:D9, it is GlobalTop Technology Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 001CD9?
001CD9 is registered to GlobalTop Technology Inc. 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. GlobalTop Technology Inc.'s block covers 16,777,216 addresses.
What devices use 001CD9?
Any network device with a MAC address starting 00:1C:D9 was manufactured by or for GlobalTop Technology Inc..