Report for 21373

Name

NBB-AS - Banque Nationale de Belgique, BE

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 AS2.0) 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.

21373 NBB-AS - Banque Nationale de Belgique, BE

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS5488          Belgacom - Proximus NV, BE

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
24442 AS21373        ORIGIN  Originate:       2048 /21.00  Transit:          0 /0.00  NBB-AS - Banque Nationale de Belgique, BE

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       %
15843 AS21373       NBB-AS - Banque Nationale de Belgique, BE          6      4      2      4      2  33.33%


  Prefix               AS Path                              Aggregation Suggestion
  193.53.48.0/24       4777 2497 3356 5432 5488 21373   
  193.53.50.0/24       4777 2497 3356 5432 5488 21373   
  193.53.54.0/23       4777 2497 3356 5432 5488 21373 + Announce - aggregate of 193.53.54.0/24 (4777 2497 3356 5432 5488 21373) and 193.53.55.0/24 (4777 2497 3356 5432 5488 21373)
  193.53.54.0/24       4777 2497 3356 5432 5488 21373 - Withdrawn - aggregated with 193.53.55.0/24 (4777 2497 3356 5432 5488 21373)
  193.53.55.0/24       4777 2497 3356 5432 5488 21373 - Withdrawn - aggregated with 193.53.54.0/24 (4777 2497 3356 5432 5488 21373)
  193.53.56.0/22       4777 2497 3356 5432 5488 21373 + Announce - aggregate of 193.53.56.0/23 (4777 2497 3356 5432 5488 21373) and 193.53.58.0/23 (4777 2497 3356 5432 5488 21373)
  193.53.56.0/23       4777 2497 3356 5432 5488 21373 - Withdrawn - aggregated with 193.53.58.0/23 (4777 2497 3356 5432 5488 21373)
  193.53.58.0/23       4777 2497 3356 5432 5488 21373 - Withdrawn - aggregated with 193.53.56.0/23 (4777 2497 3356 5432 5488 21373)

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

AS21373   6 More Specifics   6 Total Advertisements   NBB-AS - Banque Nationale de Belgique, BE
    193.53.48.0/24                193.53.48.0/20
    193.53.50.0/24                193.53.48.0/20
    193.53.54.0/24                193.53.48.0/20
    193.53.55.0/24                193.53.48.0/20
    193.53.56.0/23                193.53.48.0/20
    193.53.58.0/23                193.53.48.0/20

Whois Entry

whois: 402591

IANA has recorded AS21373 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS21373\n             % This is the RIPE Database query service.
             % The objects are in RPSL format.
             %
             % The RIPE Database is subject to Terms and Conditions.
             % See https://docs.db.ripe.net/terms-conditions.html
             
             %ERROR:201: access denied for 203.119.106.26
             %
             % Queries from your IP address have passed the daily limit of controlled objects.
             % Access from your host has been temporarily denied.
             % For more information, see
             % https://docs.db.ripe.net/FAQ#why-did-i-receive-an-error-201-access-denied
             
             % This query was served by the RIPE Database Query Service version 1.122.1 (ABERDEEN)