196.45.164.0/21,BW block - 20050705
41.223.72.0/21,BW block - 20061123
41.223.140.0/21,BW block - 20070717
41.190.244.0/21,BW block - 20080807
168.167.0.0/15,BW block - 20081212
41.216.208.0/20,BW block - 20090529
41.138.72.0/20,BW block - 20090716
41.74.48.0/19,BW block - 20100215