What this means
The IEEE assigned the MA-L block 001D1D to Inter-M Corporation. 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 00:1D:1D, it is Inter-M Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 001D1D?
001D1D is registered to Inter-M Corporation 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. Inter-M Corporation's block covers 16,777,216 addresses.
What devices use 001D1D?
Any network device with a MAC address starting 00:1D:1D was manufactured by or for Inter-M Corporation.