Advertised prefixes smaller than registry allocations (per /8 block)
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  57:2        61:20       62:4        63:2        64:1        65:1      
  66:1       157:1       163:1       193:1       194:2       195:9      
 198:1       202:2       203:19      208:1       210:9       213:3      
 219:16     
