What this means
The IEEE assigned the MA-L block 40A63D to SignalFire Telemetry. 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 40:A6:3D, it is SignalFire Telemetry hardware.
Frequently Asked Questions
Who owns MAC prefix 40A63D?
40A63D is registered to SignalFire Telemetry 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. SignalFire Telemetry's block covers 16,777,216 addresses.
What devices use 40A63D?
Any network device with a MAC address starting 40:A6:3D was manufactured by or for SignalFire Telemetry.