What this means
The IEEE assigned the MA-L block 0011C1 to 4P MOBILE DATA PROCESSING. 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 00:11:C1, it is 4P MOBILE DATA PROCESSING hardware.
Frequently Asked Questions
Who owns MAC prefix 0011C1?
0011C1 is registered to 4P MOBILE DATA PROCESSING 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. 4P MOBILE DATA PROCESSING's block covers 16,777,216 addresses.
What devices use 0011C1?
Any network device with a MAC address starting 00:11:C1 was manufactured by or for 4P MOBILE DATA PROCESSING.