What this means
The IEEE assigned the MA-L block 00506B to SPX-ATEG. 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 00:50:6B, it is SPX-ATEG hardware.
Frequently Asked Questions
Who owns MAC prefix 00506B?
00506B is registered to SPX-ATEG 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. SPX-ATEG's block covers 16,777,216 addresses.
What devices use 00506B?
Any network device with a MAC address starting 00:50:6B was manufactured by or for SPX-ATEG.