What this means
The IEEE assigned the MA-L block 0013CF to 4Access Communications. 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 00:13:CF, it is 4Access Communications hardware.
Frequently Asked Questions
Who owns MAC prefix 0013CF?
0013CF is registered to 4Access Communications 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. 4Access Communications's block covers 16,777,216 addresses.
What devices use 0013CF?
Any network device with a MAC address starting 00:13:CF was manufactured by or for 4Access Communications.