What this means
The IEEE assigned the MA-L block 300B9C to Delta Mobile 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 30:0B:9C, it is Delta Mobile Systems, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 300B9C?
300B9C is registered to Delta Mobile 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 Mobile Systems, Inc.'s block covers 16,777,216 addresses.
What devices use 300B9C?
Any network device with a MAC address starting 30:0B:9C was manufactured by or for Delta Mobile Systems, Inc..