Advertised prefixes smaller than registry allocations (per /8 block)
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   2:2         5:32       31:2        37:30       41:17       46:6      
  62:7        66:1        69:1        74:4        77:16       78:5      
  79:7        80:12       81:36       82:5        83:17       84:5      
  85:38       86:1        89:24       91:44       92:1        93:18     
  94:2        95:6       102:1       109:6       176:6       178:1      
 185:54      188:20      197:1       212:53      213:15      216:1      
 217:26     
