I looked into the answer for this question and in most of the answers, I found that it is not possible to detect the iBeacon without knowing the UUID of the device.
But some of the apps on App Store is doing the same. Here are the links for those apps, which are detecting unknown iBeacons.
- https://itunes.apple.com/in/app/locate-beacon/id738709014?mt=8
- https://itunes.apple.com/us/app/my-beacon-best-beacon-manager/id850255614?mt=8
Let me know if it is possible to detect the unknown iBeacon.
Thanks in advance.