What this means
The IEEE assigned the MA-L block 000303 to JAMA Electronics 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 00:03:03, it is JAMA Electronics Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 000303?
000303 is registered to JAMA Electronics 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. JAMA Electronics Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 000303?
Any network device with a MAC address starting 00:03:03 was manufactured by or for JAMA Electronics Co., Ltd..