Advertised prefixes smaller than registry allocations (per /8 block)
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   3:1         4:5         6:9        12:979      13:14       15:28     
  16:9        17:20       20:46       24:1304     25:2        32:218    
  34:1        38:54       40:29       43:3        44:3        47:34     
  52:3        53:3        56:5        57:98       61:441      62:651    
  63:2496     64:2810     65:2968     66:3612     67:584      68:1460   
  69:401      80:502      81:211      82:9       128:228     129:286    
 130:111     131:124     132:48      133:2       134:289     135:8      
 136:235     137:155     138:189     139:178     140:264     141:221    
 142:183     143:104     144:175     145:60      146:508     147:167    
 148:445     149:105     150:131     151:131     152:554     153:175    
 154:6       155:230     156:80      157:85      158:191     159:218    
 160:111     161:204     162:472     163:131     164:404     165:356    
 166:205     167:386     168:316     169:138     170:516     171:33     
 192:19      193:3759    194:2777    195:1650    198:32      199:10     
 200:50      202:48      203:175     204:18      205:2       206:12     
 207:7       208:3870    209:3665    210:1258    211:554     212:1552   
 213:1374    216:4942    217:853     218:172     219:136     220:185    
 221:8      
