What this means
The IEEE assigned the MA-L block B41780 to DTI Group 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 B4:17:80, it is DTI Group Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix B41780?
B41780 is registered to DTI Group 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. DTI Group Ltd's block covers 16,777,216 addresses.
What devices use B41780?
Any network device with a MAC address starting B4:17:80 was manufactured by or for DTI Group Ltd.