Report for 24971

Name

MASTER-AS Czech Republic www.master.cz, CZ

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.

24971 MASTER-AS Czech Republic  www.master.cz, CZ

  Adjacency:     8  Upstream:     2  Downstream:     6
  Upstream Adjacent AS list
    AS9002          RETN-AS, GB
    AS1299          TWELVE99 Arelion, fka Telia Carrier, SE
  Downstream Adjacent AS list
    AS51134         INTACTO-AS, CZ
    AS64481         DRAGON-CAPITAL-AS Master-CZ, UA
    AS202857        CZ-AS, CZ
    AS211085        AMCCOMP-MASTER-PRAHA, CZ
    AS21045         QNET, CZ
    AS204957        GREENFLOID-AS, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
4051  AS24971        ORG+TRN Originate:      58880 /16.15  Transit:       9216 /18.83 MASTER-AS Czech Republic  www.master.cz, CZ

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       %
15799 AS24971       MASTER-AS Czech Republic  www.master.cz, CZ       33      4      2     31      2   6.06%


  Prefix               AS Path                              Aggregation Suggestion
  5.180.200.0/22       4777 2516 1299 24971   
  37.140.220.0/24      4777 2516 1299 24971   
  37.205.8.0/21        4777 2516 1299 24971 + Announce - aggregate of 37.205.8.0/22 (4777 2516 1299 24971) and 37.205.12.0/22 (4777 2516 1299 24971)
  37.205.8.0/22        4777 2516 1299 24971 - Withdrawn - aggregated with 37.205.12.0/22 (4777 2516 1299 24971)
  37.205.12.0/22       4777 2516 1299 24971 - Withdrawn - aggregated with 37.205.8.0/22 (4777 2516 1299 24971)
  77.93.192.0/19       4777 2516 1299 24971   
  80.79.16.0/20        4777 2516 1299 24971   
  81.31.32.0/20        4777 2516 1299 24971   
  83.167.224.0/19      4777 2516 1299 24971   
  83.223.52.0/24       4777 2516 1299 24971   
  85.118.128.0/21      4777 2516 1299 24971   
  89.185.224.0/19      4777 2516 1299 24971   
  91.213.160.0/24      4777 2516 1299 24971   
  91.214.192.0/22      4777 2516 1299 24971   
  91.216.179.0/24      4777 2516 1299 24971   
  91.226.216.0/22      4777 2516 1299 24971   
  92.63.56.0/24        4777 2516 1299 24971   
  130.193.16.0/24      4777 2516 1299 24971   
  149.62.144.0/21      4777 2516 1299 24971   
  176.227.168.0/23     4777 2516 1299 24971   
  178.238.32.0/20      4777 2516 1299 24971   
  185.8.164.0/22       4777 2516 1299 24971 + Announce - aggregate of 185.8.164.0/23 (4777 2516 1299 24971) and 185.8.166.0/23 (4777 2516 1299 24971)
  185.8.164.0/23       4777 2516 1299 24971 - Withdrawn - aggregated with 185.8.166.0/23 (4777 2516 1299 24971)
  185.8.166.0/23       4777 2516 1299 24971 - Withdrawn - aggregated with 185.8.164.0/23 (4777 2516 1299 24971)
  185.25.184.0/22      4777 2516 1299 24971   
  185.32.160.0/22      4777 2516 1299 24971   
  185.58.40.0/22       4777 2516 1299 24971   
  185.85.164.0/22      4777 2516 1299 24971   
  185.145.160.0/22     4777 2516 1299 24971   
  185.239.216.0/22     4777 2516 1299 24971   
  188.213.234.0/23     4777 2516 1299 24971   
  188.215.18.0/23      4777 2516 1299 24971   
  193.169.160.0/23     4777 2516 1299 24971   
  194.145.180.0/22     4777 2516 1299 24971   
  195.140.252.0/22     4777 2516 1299 24971   

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

AS24971   8 More Specifics   33 Total Advertisements   MASTER-AS Czech Republic  www.master.cz, CZ
    37.205.8.0/22                 37.205.8.0/21
    37.205.12.0/22                37.205.8.0/21
    83.223.52.0/24                83.223.32.0/19
    92.63.56.0/24                 92.63.48.0/20
    130.193.16.0/24               130.193.16.0/21
    176.227.168.0/23              176.227.168.0/21
    185.8.164.0/23                185.8.164.0/22
    185.8.166.0/23                185.8.164.0/22

Whois Entry

whois: 402332

IANA has recorded AS24971 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.net -r "AS24971\n             % [whois.apnic.net]
             % Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html
             
             %ERROR:101: no entries found
             %
             % No entries found in source APNIC,JPNIC,KRNIC,TWNIC,IDNIC,IRINN-GRS.
             
             % This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU5)