Report for 203909

Name

Mainframe Networks, SE

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.

203909 Mainframe Networks, SE

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS213113        KAMEL, SE

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
70719 AS203909       ORIGIN  Originate:        256 /24.00  Transit:          0 /0.00  Mainframe Networks, SE

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       %
62706 AS203909      Mainframe Networks, SE                             1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  193.228.143.0/24     4777 2497 3257 3399 213113 203909   

Whois Entry

whois: 402332

IANA has recorded AS203909 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS203909\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 'AS203889 - AS203938'
             
             as-block:       AS203889 - AS203938
             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 'AS203909'
             
             % Abuse contact for 'AS203909' is 'abuse@cmd.nu'
             
             aut-num:        AS203909
             descr:          Mainframe Networks
             descr:          For more information, see https://as203909.net
             as-name:        MAINFRAME-NET
             org:            ORG-BCMD1-RIPE
             sponsoring-org: ORG-KNIF1-RIPE
             import:         from AS213113 accept ANY
             export:         to AS213113 announce AS203909
             import:         from AS52192 accept ANY
             export:         to AS52192 announce AS203909
             import:         from AS3399 accept ANY
             export:         to AS3399 announce AS203909
             admin-c:        BCMD-RIPE
             tech-c:         BCMD-RIPE
             status:         ASSIGNED
             mnt-by:         RIPE-NCC-END-MNT
             mnt-by:         BLUECMD-MNT
             created:        2025-11-11T09:29:42Z
             last-modified:  2025-11-11T17:15:47Z
             source:         RIPE
             
             organisation:   ORG-BCMD1-RIPE
             org-name:       Christian Svensson
             country:        SE
             org-type:       OTHER
             address:        Stockholm, Sweden
             abuse-c:        ACRO57254-RIPE
             mnt-ref:        BLUECMD-MNT
             mnt-by:         BLUECMD-MNT
             created:        2024-08-06T13:17:14Z
             last-modified:  2024-08-06T13:25:16Z
             source:         RIPE # Filtered
             
             %ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
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             % 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 (BUSA)