Report for 204509

Name

SYN, FR

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.

204509 SYN, FR

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS31167         AXIONE-AS, FR

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
40377 AS204509       ORIGIN  Originate:       1024 /22.00  Transit:          0 /0.00  SYN, FR

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       %
63009 AS204509      SYN, FR                                            1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  193.239.12.0/22      4777 2497 5511 31167 204509   

Whois Entry

whois: 402332

IANA has recorded AS204509 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS204509\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 'AS203940 - AS205662'
             
             as-block:       AS203940 - AS205662
             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:        2026-03-05T15:29:31Z
             last-modified:  2026-03-05T15:29:31Z
             source:         RIPE
             
             % Information related to 'AS204509'
             
             % Abuse contact for 'AS204509' is 'abuse@synadm.fr'
             
             aut-num:        AS204509
             as-name:        SYN
             org:            ORG-SEYN1-RIPE
             import:         from AS31167 accept ANY
             export:         to AS31167 announce AS204509
             import:         from AS20900 accept ANY
             export:         to AS20900 announce AS204509
             admin-c:        RR14745-RIPE
             tech-c:         RR14745-RIPE
             status:         ASSIGNED
             mnt-by:         RIPE-NCC-END-MNT
             mnt-by:         lir-fr-seineetyvelines-1-MNT
             created:        2026-01-21T13:47:33Z
             last-modified:  2026-01-21T13:47:33Z
             source:         RIPE
             
             organisation:   ORG-SEYN1-RIPE
             org-name:       SEINE ET YVELINES NUMERIQUE
             country:        FR
             org-type:       LIR
             address:        15 B AV DU CENTRE
             address:        78280
             address:        GUYANCOURT
             address:        FRANCE
             phone:          +33662416966
             admin-c:        RR14745-RIPE
             tech-c:         RR14745-RIPE
             abuse-c:        AR78304-RIPE
             mnt-ref:        lir-fr-seineetyvelines-1-MNT
             mnt-by:         RIPE-NCC-HM-MNT
             mnt-by:         lir-fr-seineetyvelines-1-MNT
             created:        2025-05-23T07:10:21Z
             last-modified:  2025-05-23T07:10:21Z
             source:         RIPE # Filtered
             
             %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 1.121.2 (SHETLAND)