What this means
The IEEE assigned the MA-L block 0003C1 to Packet Dynamics 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 00:03:C1, it is Packet Dynamics Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 0003C1?
0003C1 is registered to Packet Dynamics Ltd 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. Packet Dynamics Ltd's block covers 16,777,216 addresses.
What devices use 0003C1?
Any network device with a MAC address starting 00:03:C1 was manufactured by or for Packet Dynamics Ltd.