What this means
The IEEE assigned the MA-M block 04ECA96 to SHANGHAI CHENZHU INSTRUMENT 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 04:EC:A9:6, it is SHANGHAI CHENZHU INSTRUMENT CO., LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 04ECA96?
04ECA96 is registered to SHANGHAI CHENZHU INSTRUMENT CO., LTD. in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. SHANGHAI CHENZHU INSTRUMENT CO., LTD.'s block covers 1,048,576 addresses.
What devices use 04ECA96?
Any network device with a MAC address starting 04:EC:A9:6 was manufactured by or for SHANGHAI CHENZHU INSTRUMENT CO., LTD..