Advertised prefixes smaller than registry allocations (per /8 block)
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  24:4        37:1        41:270      50:2        62:4        63:35     
  64:63       65:8        66:56       67:49       68:18       69:48     
  70:2        71:1        72:24       74:58       76:47       77:11     
  80:8        81:2        82:11       83:1        84:1        85:39     
  86:7        87:1        89:2        91:13       92:2        93:1      
  96:8        97:2        98:2       100:1       102:3       107:1      
 108:14      109:7       173:8       177:9       179:14      181:1      
 184:6       185:17      186:3       187:20      188:5       189:5      
 190:36      191:28      197:329     201:38      208:103     209:172    
 212:116     213:6       216:108     217:1      
