What this means
The IEEE assigned the MA-L block 84821B to PROX SG Pte 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 84:82:1B, it is PROX SG Pte Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 84821B?
84821B is registered to PROX SG Pte 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. PROX SG Pte Ltd's block covers 16,777,216 addresses.
What devices use 84821B?
Any network device with a MAC address starting 84:82:1B was manufactured by or for PROX SG Pte Ltd.