What this means
The IEEE assigned the MA-L block A4C7DE to Cambridge Industries(Group) Co.,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 A4:C7:DE, it is Cambridge Industries(Group) Co.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix A4C7DE?
A4C7DE is registered to Cambridge Industries(Group) Co.,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. Cambridge Industries(Group) Co.,Ltd.'s block covers 16,777,216 addresses.
What devices use A4C7DE?
Any network device with a MAC address starting A4:C7:DE was manufactured by or for Cambridge Industries(Group) Co.,Ltd..