Advertised prefixes smaller than registry allocations (per /8 block)
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   2:3         5:20       24:4        31:8        37:4        41:123    
  46:8        50:7        62:19       63:42       64:74       65:10     
  66:79       67:59       68:23       69:58       70:2        71:1      
  72:24       74:60       76:51       77:20       78:6        79:11     
  80:22       81:33       82:17       83:16       84:10       85:46     
  86:7        87:1        89:18       91:77       92:4        93:7      
  94:9        95:6        96:8        97:3        98:2       100:1      
 102:46      107:17      108:16      109:16      173:10      176:13     
 177:18      178:6       179:13      181:1       184:2       185:98     
 186:3       187:17      188:15      189:3       190:19      191:28     
 197:155     201:39      208:124     209:127     212:187     213:22     
 216:104     217:24     
