Report for 21574

Name

AS21574 - Century Telecom Ltda, BR

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS4637) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

21574 BIS Brasil Internet Service Ltda

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS16735   Companhia de Telecomunicacoes do Brasil Central
    AS8167    TELESC - Telecomunicacoes de Santa Catarina SA
    AS15180   Diveo do Brasil Telecomunicacoes Ltda

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
9903  AS21574  ORIGIN  Originate:       4096 /20.00  Transit:          0 /0.00  BIS Brasil Internet Service Ltda

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
 5449 AS21574 BIS Brasil Internet Service Ltda              6      2      1      5      1  16.67%


  Prefix               AS Path                              Aggregation Suggestion
  200.169.0.0/21       4637 12956 16735 21574   
  200.169.8.0/23       4637 12956 16735 21574 + Announce - aggregate of 200.169.8.0/24 (4637 12956 16735 21574) and 200.169.9.0/24 (4637 12956 16735 21574)
  200.169.8.0/24       4637 12956 16735 21574 - Withdrawn - aggregated with 200.169.9.0/24 (4637 12956 16735 21574)
  200.169.9.0/24       4637 12956 16735 21574 - Withdrawn - aggregated with 200.169.8.0/24 (4637 12956 16735 21574)
  200.169.10.0/23      4637 3320 8167 21574   
  200.169.12.0/23      4637 3320 8167 21574   
  200.169.14.0/23      4637 3549 13878 15180 21574   

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS21574   6 More Specifics   6 Total Advertisements   BIS Brasil Internet Service Ltda
    200.169.0.0/21                200.128.0.0/9
    200.169.8.0/24                200.128.0.0/9
    200.169.9.0/24                200.128.0.0/9
    200.169.10.0/23               200.128.0.0/9
    200.169.12.0/23               200.128.0.0/9
    200.169.14.0/23               200.128.0.0/9

Whois Entry

whois: 402603

IANA has recorded AS21574 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS21574\n             % Joint Whois - whois.lacnic.net
             %  This server accepts single ASN, IPv4 or IPv6 queries
              
             
             Query rate limit exceeded