ARIN Region per AS prefix count listed by address space
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  ASN   No of nets  /20 equiv  Description
 1872       25         32       3Com Corporation 
22801       15          5       INTAP, LLC 
    1      106          3       GENUITY 
 1784       32          2       Global NAPs Networks 
 2714       32          1       General Services Administrati
22250        1          1       ABRANET-BR 
