Result
Mac address for EC2257
Company / Vendor
JiangSu NanJing University Electronic Information Technology Co.,Ltd
Prefix
EC2257
Database Type
IEEE MA-L
Start Mac Address
EC2257000000
End Mac Address
EC2257FFFFFF
Company Address
Possible Devices
16777216
This number represents the possible device number that can be manufactured using this mac address, but doesn't mean it is all has been manufactured yet
Link