Report for 20743

Name

SWX Zurich, Switzerland, CH

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.

20743 SWX Zurich, Switzerland, CH

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS3303          SWISSCOM Swisscom Switzerland Ltd, CH
    AS6730          SUNRISE, CH

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
10891 AS20743        ORIGIN  Originate:       8960 /18.87  Transit:          0 /0.00  SWX Zurich, Switzerland, CH

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       %
21050 AS20743       SWX Zurich, Switzerland, CH                        4      1      0      3      1  25.00%


  Prefix               AS Path                              Aggregation Suggestion
  146.109.145.0/24     4608 3303 20743        
  146.109.153.0/24     4777 2516 6830 6730 20743   
  146.109.160.0/19     4608 3303 20743        
  146.109.161.0/24     4608 3303 20743      - Withdrawn - matching aggregate 146.109.160.0/19 4608 3303 20743

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

AS20743   4 More Specifics   4 Total Advertisements   SWX Zurich, Switzerland, CH
    146.109.145.0/24              146.109.0.0/16
    146.109.153.0/24              146.109.0.0/16
    146.109.160.0/19              146.109.0.0/16
    146.109.161.0/24              146.109.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS20743 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS20743\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
             
             % Note: this output has been filtered.
             
             % Information related to 'AS20485 - AS20857'
             
             as-block:       AS20485 - AS20857
             descr:          RIPE NCC ASN block
             remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
             mnt-by:         RIPE-NCC-HM-MNT
             created:        2018-11-22T15:27:27Z
             last-modified:  2018-11-22T15:27:27Z
             source:         RIPE
             
             % Information related to 'AS20743'
             
             % Abuse contact for 'AS20743' is 'dnsadmin@six-group.com'
             
             aut-num:        AS20743
             as-name:        SWX
             org:            ORG-SSEA4-RIPE
             descr:          Zurich, Switzerland
             descr:          www.six-swiss-exchange.com
             status:         ASSIGNED
             import:         from AS3303 action pref=100; accept ANY
             import:         from AS702 action pref=100; accept ANY
             export:         to AS3303 announce AS20743
             export:         to AS702 announce AS20743
             export:         to AS9042 announce AS20743
             admin-c:        RM14096-RIPE
             admin-c:        FS9907-RIPE
             tech-c:         RM14096-RIPE
             tech-c:         FS9907-RIPE
             mnt-by:         RIPE-NCC-END-MNT
             mnt-by:         SIX-GROUP-MNT
             created:        2002-05-17T09:19:01Z
             last-modified:  2017-11-15T09:17:23Z
             source:         RIPE # Filtered
             sponsoring-org: ORG-SGSA2-RIPE
             
             organisation:   ORG-SSEA4-RIPE
             org-name:       SIX Swiss Exchange AG
             country:        CH
             org-type:       OTHER
             address:        Selnaustrasse 30, CH-8001 Zurich
             reg-nr:         CHE-106.787.008
             mnt-ref:        SIX-GROUP-MNT
             mnt-by:         SIX-GROUP-MNT
             created:        2013-06-04T12:43:17Z
             last-modified:  2026-04-29T06:26:41Z
             source:         RIPE # Filtered
             abuse-c:        AMSG4-RIPE
             
             %ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
             %
             % 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 (BUSA)