Advertised prefixes smaller than registry allocations (per /8 block)
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  24:4        37:1        41:243      50:3        62:3        63:36     
  64:63       65:4        66:52       67:54       68:18       69:48     
  70:2        71:1        72:23       74:58       76:51       77:12     
  80:8        81:2        82:11       83:1        84:2        85:39     
  86:7        87:1        89:3        91:16       92:2        93:1      
  96:8        97:2        98:2       100:1       102:1       107:1      
 108:14      109:6       173:9       177:10      179:14      181:1      
 184:7       185:14      186:3       187:21      188:5       189:4      
 190:18      191:28      197:313     201:39      208:104     209:168    
 212:133     213:7       216:106     217:1      
