What this means
The IEEE assigned the MA-L block 4C7897 to Arrowhead Alarm Products 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 4C:78:97, it is Arrowhead Alarm Products Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 4C7897?
4C7897 is registered to Arrowhead Alarm Products 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. Arrowhead Alarm Products Ltd's block covers 16,777,216 addresses.
What devices use 4C7897?
Any network device with a MAC address starting 4C:78:97 was manufactured by or for Arrowhead Alarm Products Ltd.