Report for 12641

Name

BT_MPLS - British Telecommunications PLC, 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 AS4637) 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.

12641 BT_MPLS BT Global Services MPLS core network

  Adjacency:     3  Upstream:     2  Downstream:     1
  Upstream Adjacent AS list
    AS1889    HP-EUROPE-AS Hewlett-Packard Company
    AS5400    BT BT European Backbone
  Downstream Adjacent AS list
    AS2856    BT-UK-AS BTnet UK Regional network

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
17080 AS12641  ORG+TRN Originate:        512 /23.00  Transit:        512 /23.00 BT_MPLS BT Global Services MPLS core network

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       %
 9684 AS12641 BT_MPLS BT Global Services MPLS core net      2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  141.6.203.0/24       4637 5400 12641        
  162.61.79.0/24       4637 5400 12641        

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

AS12641   2 More Specifics   2 Total Advertisements   BT_MPLS BT Global Services MPLS core network
    141.6.203.0/24                141.6.0.0/16
    162.61.79.0/24                162.61.0.0/16

Whois Entry

whois: 402603

IANA has recorded AS12641 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS12641\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 'AS12557 - AS13223'
             
             as-block:       AS12557 - AS13223
             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:        2018-11-22T15:27:24Z
             last-modified:  2018-11-22T15:27:24Z
             source:         RIPE
             
             % Information related to 'AS12641'
             
             % Abuse contact for 'AS12641' is 'abuse@eu.bt.net'
             
             aut-num:        AS12641
             as-name:        BT_MPLS
             org:            ORG-CNS3-RIPE
             admin-c:        PH823-RIPE
             tech-c:         JBS6-RIPE
             status:         ASSIGNED
             mnt-by:         RIPE-NCC-END-MNT
             mnt-by:         CIP-MNT
             created:        2002-04-03T14:18:20Z
             last-modified:  2017-11-15T09:13:31Z
             source:         RIPE
             
             organisation:   ORG-CNS3-RIPE
             org-name:       British Telecommunications PLC
             country:        GB
             reg-nr:         01800000
             org-type:       LIR
             address:        Pritech Park SEZ,
                             Bellandur village, Varthur Hob
             address:        KA 560103
             address:        Bengaluru
             address:        INDIA
             phone:          +31 (0)6 3806 7798
             phone:          +31 (0)88 212 8034
             fax-no:         +31 (0)88 212 8083
             abuse-c:        AR15037-RIPE
             mnt-ref:        CIP-MNT
             mnt-ref:        RIPE-NCC-HM-MNT
             mnt-by:         RIPE-NCC-HM-MNT
             mnt-by:         CIP-MNT
             admin-c:        MC9509-RIPE
             admin-c:        JV94-RIPE
             admin-c:        MB19632-RIPE
             admin-c:        SW1173-RIPE
             admin-c:        SP2132-RIPE
             admin-c:        CIA1-RIPE
             admin-c:        BS1836-RIPE
             admin-c:        AS45478-RIPE
             created:        2004-04-17T11:18:51Z
             last-modified:  2026-05-13T07:25:40Z
             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)