The system is gathering external datasources (e.g. dshield, shadowserver, Arbor ATLAS) in order to evaluate the ranking over time.
The purpose is to detect any malicious activities of a specific AS number fast and to validate the data sources used for security.
More details can be found in the latest presentation given at: the National CSIRT Meeting.
Source code and documention of the server are available at: https://github.com/CIRCL/bgp-ranking
You can find the Redis, python and Web APIs at this address: https://github.com/CIRCL/bgpranking-redis-api
The public interface of BGP Ranking is available at: http://bgpranking.circl.lu/