What this means
The IEEE assigned the MA-L block 0040BA to ALLIANT COMPUTER SYSTEMS CORP.. 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 00:40:BA, it is ALLIANT COMPUTER SYSTEMS CORP. hardware.
Frequently Asked Questions
Who owns MAC prefix 0040BA?
0040BA is registered to ALLIANT COMPUTER SYSTEMS CORP. 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. ALLIANT COMPUTER SYSTEMS CORP.'s block covers 16,777,216 addresses.
What devices use 0040BA?
Any network device with a MAC address starting 00:40:BA was manufactured by or for ALLIANT COMPUTER SYSTEMS CORP..