Advertised prefixes smaller than registry allocations (per /8 block)
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  24:4        37:1        41:169      50:2        62:5        63:35     
  64:63       65:7        66:56       67:51       68:18       69:49     
  70:2        71:1        72:23       74:58       76:50       77:11     
  80:8        81:2        82:11       83:1        84:2        85:39     
  86:7        87:1        89:3        91:13       92:2        93:1      
  96:8        97:2        98:2       100:1       102:2       107:1      
 108:14      109:6       173:9       177:10      179:14      184:6      
 185:17      186:3       187:21      188:5       189:4       190:18     
 191:28      197:310     201:38      208:103     209:115     212:137    
 213:6       216:104     217:1      
