Advertised prefixes smaller than registry allocations (per /8 block)
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   2:2         5:32       31:1        37:31       41:56       46:7      
  62:7        66:1        69:1        74:4        77:16       78:5      
  79:7        80:12       81:38       82:5        83:17       84:5      
  85:39       86:1        89:22       91:46       92:2        93:20     
  94:2        95:6       102:1       109:5       176:6       178:1      
 184:1       185:54      188:21      197:1       212:53      213:18     
 216:1       217:27     
