What this means
The IEEE assigned the MA-L block 1C40E8 to SHENZHEN PROGRESS&WIN TECHNOLOGY 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:40:E8, it is SHENZHEN PROGRESS&WIN TECHNOLOGY CO.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 1C40E8?
1C40E8 is registered to SHENZHEN PROGRESS&WIN TECHNOLOGY 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. SHENZHEN PROGRESS&WIN TECHNOLOGY CO.,LTD's block covers 16,777,216 addresses.
What devices use 1C40E8?
Any network device with a MAC address starting 1C:40:E8 was manufactured by or for SHENZHEN PROGRESS&WIN TECHNOLOGY CO.,LTD.