Abstract: Described is a method of re-allocating frequency bands in an available spectrum, comprising: receiving a first request for allocation of frequency bands via an interface; comparing the request with a plurality of spectrum entitlement records in a publically readable database, the plurality of spectrum entitlement records relating to different frequency bands and between them providing information for the entire available spectrum; re-allocating at least a frequency band of the available spectrum based on the request by identifying available frequency bands from the spectrum entitlement records; adding a spectrum entitlement record to the publically readable database representing the re-allocating of the at least a frequency band of the available spectrum.