Advertised prefixes smaller than registry allocations (per /8 block)
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   5:2        24:3        37:1        41:246      50:4        62:1      
  63:35       64:61       65:9        66:69       67:52       68:18     
  69:41       70:3        72:19       74:63       76:44       81:2      
  83:1        84:1        86:5        87:1        89:10       91:19     
  93:1        96:8        97:2        98:2       102:6       107:1      
 108:15      109:12      173:6       177:9       179:12      181:1      
 184:6       185:13      186:4       187:8       188:2       190:18     
 191:28      197:345     201:9       208:69      209:103     212:109    
 216:113    
