Report for 204351

Name

NAM, 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.

204351 NAM, CZ

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS16019         VODAFONE-CZ-AS, CZ
    AS28725         CETIN-AS, CZ

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
40355 AS204351       ORIGIN  Originate:       1024 /22.00  Transit:          0 /0.00  NAM, 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       %
27433 AS204351      NAM, CZ                                            4      2      1      3      1  25.00%


  Prefix               AS Path                              Aggregation Suggestion
  185.241.240.0/23     4777 2497 1273 16019 204351 + Announce - aggregate of 185.241.240.0/24 (4777 2497 1273 16019 204351) and 185.241.241.0/24 (4777 2497 1273 16019 204351)
  185.241.240.0/24     4777 2497 1273 16019 204351 - Withdrawn - aggregated with 185.241.241.0/24 (4777 2497 1273 16019 204351)
  185.241.241.0/24     4777 2497 1273 16019 204351 - Withdrawn - aggregated with 185.241.240.0/24 (4777 2497 1273 16019 204351)
  185.241.242.0/24     4777 2516 1299 28725 204351   
  185.241.243.0/24     4777 2497 1273 16019 204351   

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

AS204351   4 More Specifics   4 Total Advertisements   NAM, CZ
    185.241.240.0/24              185.241.240.0/22
    185.241.241.0/24              185.241.240.0/22
    185.241.242.0/24              185.241.240.0/22
    185.241.243.0/24              185.241.240.0/22

Whois Entry

whois: 402332

IANA has recorded AS204351 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS204351\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 'AS204351'
             
             % Abuse contact for 'AS204351' is 'abuse@nam.cz'
             
             aut-num:        AS204351
             as-name:        NAM
             org:            ORG-NSA125-RIPE
             import:         from AS25248 accept ANY
             export:         to AS25248 announce AS204351
             import:         from AS6830 accept ANY
             export:         to AS6830 announce AS204351
             admin-c:        PT8955-RIPE
             admin-c:        PH8935-RIPE
             tech-c:         PT8955-RIPE
             tech-c:         PH8935-RIPE
             status:         ASSIGNED
             mnt-by:         RIPE-NCC-END-MNT
             mnt-by:         cz-nam-1-mnt
             created:        2018-03-28T13:00:42Z
             last-modified:  2023-07-25T07:13:19Z
             source:         RIPE
             
             organisation:   ORG-NSA125-RIPE
             org-name:       NAM system, a.s.
             country:        CZ
             org-type:       LIR
             address:        U Posty 1163/13
             address:        73564
             address:        Havirov
             address:        CZECH REPUBLIC
             phone:          +420596531140
             admin-c:        PT8955-RIPE
             admin-c:        PH8935-RIPE
             tech-c:         PT8955-RIPE
             tech-c:         PH8935-RIPE
             abuse-c:        AR44690-RIPE
             mnt-ref:        cz-nam-1-mnt
             mnt-by:         RIPE-NCC-HM-MNT
             mnt-by:         cz-nam-1-mnt
             created:        2018-01-16T09:04:46Z
             last-modified:  2023-07-25T07:11:34Z
             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)