select page_count
       , fragment_count
       , avg_fragmentation_in_percent
       , avg_fragment_size_in_pages
       , record_count
       , ghost_record_count
       , forwarded_record_count
  from sys.dm_db_index_physical_stats(DB_ID()
       ,OBJECT_ID('NextKeys')
       , NULL
       , NULL 
       , 'DETAILED') 
  where index_type_desc = 'HEAP'