Advertised prefixes smaller than registry allocations (per /8 block)
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   2:2         5:33       31:1        37:31       41:49       46:7      
  62:7        66:1        69:1        74:4        77:16       78:5      
  79:7        80:12       81:38       82:5        83:17       84:7      
  85:39       86:1        87:1        89:25       91:53       92:2      
  93:21       94:7        95:6       102:1       109:8       176:6      
 178:1       184:1       185:60      188:23      197:1       212:55     
 213:18      216:1       217:27     
