This is a tool used for checking various aspects of IP

 allocations and assignments as stored in the RIPE database.
 .
 Asused is a tool to summaries address space is registered in the
 RIPE database. For each allocated inetnum object a summary of used
 and free address space is printed. A grant total summary for all prefixes
 is also provided. If there are no errors in locating allocations and
 assignments under an allocation. In the total % are calculated on total
 allocations.