What this means
The IEEE assigned the MA-S block 70B3D5907 to NINGBO CRRC TIMES TRANSDUCER 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 70:B3:D5:90:7, it is NINGBO CRRC TIMES TRANSDUCER TECHNOLOGY CO., LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5907?
70B3D5907 is registered to NINGBO CRRC TIMES TRANSDUCER TECHNOLOGY CO., LTD in the IEEE MA-S registry.
What does the MA-S registry type mean?
An MA-S assignment, formerly called OUI-36, covers 36 bits, giving the vendor 4,096 device addresses, the smallest block the IEEE issues. NINGBO CRRC TIMES TRANSDUCER TECHNOLOGY CO., LTD's block covers 4,096 addresses.
What devices use 70B3D5907?
Any network device with a MAC address starting 70:B3:D5:90:7 was manufactured by or for NINGBO CRRC TIMES TRANSDUCER TECHNOLOGY CO., LTD.