What this means
The IEEE assigned the MA-L block 681F40 to Blu Wireless Technology 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 68:1F:40, it is Blu Wireless Technology Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 681F40?
681F40 is registered to Blu Wireless Technology 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. Blu Wireless Technology Ltd's block covers 16,777,216 addresses.
What devices use 681F40?
Any network device with a MAC address starting 68:1F:40 was manufactured by or for Blu Wireless Technology Ltd.