What this means
The IEEE assigned the MA-L block 4CA74B to Alcatel Lucent. 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 4C:A7:4B, it is Alcatel Lucent hardware.
Frequently Asked Questions
Who owns MAC prefix 4CA74B?
4CA74B is registered to Alcatel Lucent 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. Alcatel Lucent's block covers 16,777,216 addresses.
What devices use 4CA74B?
Any network device with a MAC address starting 4C:A7:4B was manufactured by or for Alcatel Lucent.