Advertised prefixes smaller than registry allocations (per /8 block)
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   2:3         5:24       24:4        31:8        37:4        41:128    
  46:13       50:13       62:20       63:51       64:170      65:67     
  66:119      67:78       68:31       69:97       70:29       71:47     
  72:36       74:91       76:61       77:22       78:6        79:11     
  80:21       81:35       82:17       83:17       84:11       85:73     
  86:7        87:2        88:1        89:21       91:86       92:4      
  93:7        94:9        95:6        96:22       97:3        98:14     
  99:135     100:1       102:39      107:12      108:169     109:18     
 173:38      174:2       176:18      177:17      178:7       179:14     
 181:1       184:5       185:122     186:3       187:17      188:16     
 189:3       190:21      191:28      197:164     201:40      208:169    
 209:161     212:191     213:33      216:195     217:22     
