What this means
The IEEE assigned the MA-L block A42305 to Open Networking Laboratory. 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 A4:23:05, it is Open Networking Laboratory hardware.
Frequently Asked Questions
Who owns MAC prefix A42305?
A42305 is registered to Open Networking Laboratory 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. Open Networking Laboratory's block covers 16,777,216 addresses.
What devices use A42305?
Any network device with a MAC address starting A4:23:05 was manufactured by or for Open Networking Laboratory.