What this means
The IEEE assigned the MA-L block 4857D2 to Broadcom Limited. 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 48:57:D2, it is Broadcom Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 4857D2?
4857D2 is registered to Broadcom Limited 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. Broadcom Limited's block covers 16,777,216 addresses.
What devices use 4857D2?
Any network device with a MAC address starting 48:57:D2 was manufactured by or for Broadcom Limited.