Advertised prefixes smaller than registry allocations (per /8 block)
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  57:2        61:21       64:102      66:226      67:61       68:224    
  69:66      136:1       142:2       144:2       148:2       193:4      
 194:1       195:2       198:1       202:2       203:17      210:9      
 212:7       213:4       216:2       219:15      220:31      221:1      

