Report for 42081

Name

ecmwf-it - European Centre for Medium-Range Weather Forecasts (ECMWF), GB

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.

42081 ecmwf-it - European Centre for Medium-Range Weather Forecasts (ECMWF), GB

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS137           ASGARR - Consortium GARR, IT
    AS31638         ASN-LEPIDA - Lepida S.c.p.A., IT

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
5703  AS42081        ORIGIN  Originate:      28416 /17.21  Transit:          0 /0.00  ecmwf-it - European Centre for Medium-Range Weather Forecasts (ECMWF), GB

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       %
22550 AS42081       ecmwf-it - European Centre for Medium-Range W      7      2      1      6      1  14.29%


  Prefix               AS Path                              Aggregation Suggestion
  77.83.224.0/23       4777 2516 6762 137 137 137 42081   
  77.83.226.0/24       4777 2516 6762 31638 42081   
  136.156.32.0/22      4777 2516 6762 137 137 137 42081   
  136.156.40.0/21      4777 2516 6762 137 137 137 42081   
  136.156.128.0/19     4777 2516 6762 137 137 137 42081 + Announce - aggregate of 136.156.128.0/20 (4777 2516 6762 137 137 137 42081) and 136.156.144.0/20 (4777 2516 6762 137 137 137 42081)
  136.156.128.0/20     4777 2516 6762 137 137 137 42081 - Withdrawn - aggregated with 136.156.144.0/20 (4777 2516 6762 137 137 137 42081)
  136.156.144.0/20     4777 2516 6762 137 137 137 42081 - Withdrawn - aggregated with 136.156.128.0/20 (4777 2516 6762 137 137 137 42081)
  136.156.192.0/18     4777 2516 6762 137 137 137 42081   

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

AS42081   7 More Specifics   7 Total Advertisements   ecmwf-it - European Centre for Medium-Range Weather Forecasts (ECMWF), GB
    77.83.224.0/23                77.83.224.0/22
    77.83.226.0/24                77.83.224.0/22
    136.156.32.0/22               136.156.0.0/16
    136.156.40.0/21               136.156.0.0/16
    136.156.128.0/20              136.156.0.0/16
    136.156.144.0/20              136.156.0.0/16
    136.156.192.0/18              136.156.0.0/16

Whois Entry

whois: 402603

IANA has recorded AS42081 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS42081\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 (DEXTER)