What this means
The IEEE assigned the MA-L block 000DBF to TekTone Sound & Signal Mfg., 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 00:0D:BF, it is TekTone Sound & Signal Mfg., Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 000DBF?
000DBF is registered to TekTone Sound & Signal Mfg., 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. TekTone Sound & Signal Mfg., Inc.'s block covers 16,777,216 addresses.
What devices use 000DBF?
Any network device with a MAC address starting 00:0D:BF was manufactured by or for TekTone Sound & Signal Mfg., Inc..