What this means
The IEEE assigned the MA-L block ACCB09 to Hefcom Metering (Pty) 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 AC:CB:09, it is Hefcom Metering (Pty) Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix ACCB09?
ACCB09 is registered to Hefcom Metering (Pty) 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. Hefcom Metering (Pty) Ltd's block covers 16,777,216 addresses.
What devices use ACCB09?
Any network device with a MAC address starting AC:CB:09 was manufactured by or for Hefcom Metering (Pty) Ltd.