What this means
The IEEE assigned the MA-L block 10D657 to Siemens Industrial Automation Products Ltd., Chengdu. 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 10:D6:57, it is Siemens Industrial Automation Products Ltd., Chengdu hardware.
Frequently Asked Questions
Who owns MAC prefix 10D657?
10D657 is registered to Siemens Industrial Automation Products Ltd., Chengdu 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. Siemens Industrial Automation Products Ltd., Chengdu's block covers 16,777,216 addresses.
What devices use 10D657?
Any network device with a MAC address starting 10:D6:57 was manufactured by or for Siemens Industrial Automation Products Ltd., Chengdu.