Report for 51159

Name

THINKSYSTEMSUK-ASN, GB

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.

51159 THINKSYSTEMSUK-ASN, GB

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS60800         NHL-AS1, GB

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
23375 AS51159        ORIGIN  Originate:       2304 /20.83  Transit:          0 /0.00  THINKSYSTEMSUK-ASN, GB

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       %
46818 AS51159       THINKSYSTEMSUK-ASN, GB                             5      0      0      5      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  91.142.134.0/24      4608 7575 60800 60800 60800 60800 60800 51159   
  91.228.115.0/24      4608 7575 60800 60800 60800 60800 60800 51159   
  91.239.124.0/23      4608 7575 60800 51159   
  185.62.84.0/22       4608 7575 60800 51159   
  194.187.252.0/24     4608 7575 60800 60800 60800 60800 60800 51159   

Whois Entry

whois: 402332

IANA has recorded AS51159 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS51159\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 'AS50893 - AS51311'
             
             as-block:       AS50893 - AS51311
             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:        2024-12-10T14:54:30Z
             last-modified:  2024-12-10T14:54:30Z
             source:         RIPE
             
             % Information related to 'AS51159'
             
             % Abuse contact for 'AS51159' is 'abuse@ct1.tech'
             
             aut-num:        AS51159
             as-name:        THINKSYSTEMSUK-ASN
             org:            ORG-CTL96-RIPE
             import:         from AS174 accept ANY
             export:         to AS174 announce AS51159
             import:         from AS1299 accept ANY
             export:         to AS1299 announce AS51159
             import:         from AS25973 accept ANY
             export:         to AS25973 announce AS51159
             import:         from AS3356 accept ANY
             export:         to AS3356 announce AS51159
             admin-c:        CP15124-RIPE
             tech-c:         CP15124-RIPE
             status:         ASSIGNED
             mnt-by:         RIPE-NCC-END-MNT
             mnt-by:         lir-uk-ct1technologies-1-MNT
             created:        2010-06-10T09:27:13Z
             last-modified:  2026-02-27T12:30:19Z
             source:         RIPE
             
             organisation:   ORG-CTL96-RIPE
             org-name:       CT1 Technologies Ltd
             country:        GB
             org-type:       LIR
             address:        71 New Dover Road
             address:        CT1 3DZ
             address:        Canterbury
             address:        UNITED KINGDOM
             phone:          +441227808050
             reg-nr:         16827653
             admin-c:        CP15124-RIPE
             tech-c:         CP15124-RIPE
             abuse-c:        AR79200-RIPE
             mnt-ref:        lir-uk-ct1technologies-1-MNT
             mnt-by:         RIPE-NCC-HM-MNT
             mnt-by:         lir-uk-ct1technologies-1-MNT
             created:        2025-11-26T09:40:20Z
             last-modified:  2026-04-29T05:18:01Z
             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 1.122 (SHETLAND)