What this means
The IEEE assigned the MA-L block 147DB3 to JOA TELECOM.CO.,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 14:7D:B3, it is JOA TELECOM.CO.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 147DB3?
147DB3 is registered to JOA TELECOM.CO.,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. JOA TELECOM.CO.,LTD's block covers 16,777,216 addresses.
What devices use 147DB3?
Any network device with a MAC address starting 14:7D:B3 was manufactured by or for JOA TELECOM.CO.,LTD.