What this means
The IEEE assigned the MA-L block 1803FA to IBT Interfaces. 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 18:03:FA, it is IBT Interfaces hardware.
Frequently Asked Questions
Who owns MAC prefix 1803FA?
1803FA is registered to IBT Interfaces 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. IBT Interfaces's block covers 16,777,216 addresses.
What devices use 1803FA?
Any network device with a MAC address starting 18:03:FA was manufactured by or for IBT Interfaces.