What devices use EC2257?

Any network device with a MAC address starting EC:22:57 was manufactured by or for JiangSu NanJing University Electronic Information Technology Co.,Ltd.

MA-L · OUI prefix

JiangSu NanJing University Electronic Information Technology Co.,Ltd

Q: Who owns MAC prefix EC2257?

EC2257 is registered to JiangSu NanJing University Electronic Information Technology Co.,Ltd in the IEEE MA-L registry.

Any MAC address starting EC:22:57 is registered to JiangSu NanJing University Electronic Information Technology Co.,Ltd in CN.

OUI prefix	EC2257
Vendor	JiangSu NanJing University Electronic Information Technology Co.,Ltd
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	EC:22:57:00:00:00

What this means

The IEEE assigned the MA-L block EC2257 to JiangSu NanJing University Electronic Information 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 EC:22:57, it is JiangSu NanJing University Electronic Information Technology Co.,Ltd hardware.

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