Advertised prefixes smaller than registry allocations (per /8 block)
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  24:4        37:1        41:58       50:3        62:4        63:36     
  64:63       65:4        66:51       67:55       68:16       69:47     
  70:2        71:1        72:23       74:56       76:50       77:11     
  80:8        81:2        82:11       83:1        84:2        85:39     
  86:7        87:1        89:3        91:21       92:2        93:1      
  96:8        97:2        98:2       100:1       107:1       108:14     
 109:11      173:8       176:8       177:10      178:4       179:14     
 181:1       184:7       185:15      186:3       187:20      188:5      
 189:4       190:18      191:28      201:38      208:103     209:114    
 212:134     213:7       216:106     217:1      
