What this means
The IEEE assigned the MA-L block C81E8E to ADV Security (S) Pte 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 C8:1E:8E, it is ADV Security (S) Pte Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix C81E8E?
C81E8E is registered to ADV Security (S) Pte 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. ADV Security (S) Pte Ltd's block covers 16,777,216 addresses.
What devices use C81E8E?
Any network device with a MAC address starting C8:1E:8E was manufactured by or for ADV Security (S) Pte Ltd.