Advertised prefixes smaller than registry allocations (per /8 block)
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  24:4        37:1        41:149      50:1        62:7        63:36     
  64:72       65:4        66:57       67:55       68:15       69:47     
  70:2        71:1        72:23       74:58       76:50       77:9      
  80:13       81:1        82:12       84:7        85:32       86:8      
  87:1        89:3        91:21       92:2        93:1        96:7      
  97:2        98:2       100:1       102:15      107:1       108:13     
 109:11      173:10      176:8       177:20      178:4       179:11     
 181:1       184:3       185:18      186:3       187:19      188:4      
 189:3       190:20      191:53      197:155     201:40      208:105    
 209:122     212:142     213:8       216:98      217:9      
