Advertised prefixes smaller than registry allocations (per /8 block)
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  24:4        37:1        41:146      50:4        62:6        63:42     
  64:72       65:10       66:72       67:57       68:16       69:47     
  70:2        71:1        72:23       74:59       76:47       77:9      
  80:12       81:1        82:16       84:1        85:32       86:8      
  87:1        89:3        91:22       92:1        93:1        96:7      
  97:4        98:2       102:12      107:17      108:15      109:11     
 173:10      176:8       177:21      178:4       179:11      181:1      
 184:3       185:18      186:3       187:19      188:4       189:3      
 190:20      191:53      197:140     201:39      208:111     209:131    
 212:140     213:8       216:100     217:6      
