What this means
The IEEE assigned the MA-L block 74F661 to Schneider Electric Fire & Security Oy. 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 74:F6:61, it is Schneider Electric Fire & Security Oy hardware.
Frequently Asked Questions
Who owns MAC prefix 74F661?
74F661 is registered to Schneider Electric Fire & Security Oy 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. Schneider Electric Fire & Security Oy's block covers 16,777,216 addresses.
What devices use 74F661?
Any network device with a MAC address starting 74:F6:61 was manufactured by or for Schneider Electric Fire & Security Oy.