What this means
The IEEE assigned the MA-L block 307A57 to Accuenergy (CANADA) Inc. 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 30:7A:57, it is Accuenergy (CANADA) Inc hardware.
Frequently Asked Questions
Who owns MAC prefix 307A57?
307A57 is registered to Accuenergy (CANADA) Inc 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. Accuenergy (CANADA) Inc's block covers 16,777,216 addresses.
What devices use 307A57?
Any network device with a MAC address starting 30:7A:57 was manufactured by or for Accuenergy (CANADA) Inc.