What this means
The IEEE assigned the MA-L block 000F5B to Delta Information Systems, Inc.. 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 00:0F:5B, it is Delta Information Systems, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 000F5B?
000F5B is registered to Delta Information Systems, Inc. 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. Delta Information Systems, Inc.'s block covers 16,777,216 addresses.
What devices use 000F5B?
Any network device with a MAC address starting 00:0F:5B was manufactured by or for Delta Information Systems, Inc..