Workaround for 20 maximum beacon regions on iOS CoreLocation

Let's say I have 100 beacons clustered in one location with the same UUID and different majors/minors. I want to know when user approaches each of them and get a callback in background (didEnterRegion).

To do this I can initialize beacon regions with this method:

initWithProximityUUID:major:minor:identifier:

and use the startMonitoring method on CoreLocation. The problem is that it can listen to 20 beacon regions max. Is there any way around that ?