Report for 57653

Name

CTL-AS - Central Technology Ltd, 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.

57653 CTL-AS - Central Technology Ltd, GB

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS7575          AARNET-AS-AP - Australian Academic and Research Network (AARNet), AU
    AS2914          NTT-DATA-2914 - NTT America, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
18309 AS57653        ORIGIN  Originate:       3840 /20.09  Transit:          0 /0.00  CTL-AS - Central Technology Ltd, 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       %
49835 AS57653       CTL-AS - Central Technology Ltd, GB                5      0      0      5      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  45.149.241.0/24      4608 7575 57653        
  94.156.96.0/24       4608 7575 57653        
  94.156.186.0/24      4608 7575 57653        
  109.69.232.0/21      4608 7575 57653        
  185.191.84.0/22      4608 7575 57653        

Whois Entry

whois: 402603

IANA has recorded AS57653 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS57653\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 'AS57370 - AS57973'
             
             as-block:       AS57370 - AS57973
             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:        2025-04-24T14:15:44Z
             last-modified:  2025-04-24T14:15:44Z
             source:         RIPE
             
             % Information related to 'AS57653'
             
             % Abuse contact for 'AS57653' is 'noc@ct.uk'
             
             aut-num:        AS57653
             as-name:        CTL-AS
             org:            ORG-CTL23-RIPE
             import:         from AS39326 accept ANY
             import:         from AS31727 accept ANY
             export:         to AS39326 announce AS57653
             export:         to AS31727 announce AS57653
             admin-c:        CB3871
             tech-c:         CB3871
             status:         ASSIGNED
             mnt-by:         RIPE-NCC-END-MNT
             mnt-by:         MNT-CTL
             created:        2011-12-29T10:26:42Z
             last-modified:  2017-11-15T12:23:33Z
             source:         RIPE
             
             organisation:   ORG-CTL23-RIPE
             org-name:       Central Technology Ltd
             country:        GB
             reg-nr:         04579191
             org-type:       LIR
             address:        Quantum Point
                             Sheepbridge Lane
             address:        S41 9RX
             address:        Chesterfield
             address:        UNITED KINGDOM
             phone:          +448454138888
             fax-no:         +448454138877
             mnt-ref:        RIPE-NCC-HM-MNT
             mnt-ref:        MNT-CTL
             mnt-by:         RIPE-NCC-HM-MNT
             mnt-by:         MNT-CTL
             abuse-c:        CTLA1-RIPE
             created:        2009-10-14T12:25:19Z
             last-modified:  2026-05-13T07:08:19Z
             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 1.122.1 (BUSA)