What this means
The IEEE assigned the MA-M block 1CA0EF1 to Wisnu and Supak 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 1C:A0:EF:1, it is Wisnu and Supak Co.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 1CA0EF1?
1CA0EF1 is registered to Wisnu and Supak 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. Wisnu and Supak Co.,Ltd.'s block covers 1,048,576 addresses.
What devices use 1CA0EF1?
Any network device with a MAC address starting 1C:A0:EF:1 was manufactured by or for Wisnu and Supak Co.,Ltd..