Report for 209237

Name

NPL-MANG-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.

209237 NPL-MANG-LTD, GB

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS25180         EXPONENTIAL-E-AS, GB
    AS786           JANET Jisc Services Limited, GB

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1891  AS209237       ORIGIN  Originate:     131584 /14.99  Transit:          0 /0.00  NPL-MANG-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       %
27308 AS209237      NPL-MANG-LTD, GB                                   4      2      1      3      1  25.00%


  Prefix               AS Path                              Aggregation Suggestion
  139.143.0.0/16       4608 1221 4637 786 209237 209237   
  139.143.0.0/16       4777 2497 174 25180 209237 209237 + Announce - aggregate of 139.143.0.0/17 (4777 2497 174 25180 209237 209237) and 139.143.128.0/17 (4777 2497 174 25180 209237 209237)
  139.143.0.0/17       4777 2497 174 25180 209237 209237 - Withdrawn - aggregated with 139.143.128.0/17 (4777 2497 174 25180 209237 209237)
  139.143.128.0/17     4777 2497 174 25180 209237 209237 - Withdrawn - aggregated with 139.143.0.0/17 (4777 2497 174 25180 209237 209237)
  139.143.204.0/23     4608 7575 6461 786 209237 209237   

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

AS209237   3 More Specifics   4 Total Advertisements   NPL-MANG-LTD, GB
    139.143.0.0/17                139.143.0.0/16
    139.143.128.0/17              139.143.0.0/16
    139.143.204.0/23              139.143.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS209237 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS209237\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 'AS208189 - AS214345'
             
             as-block:       AS208189 - AS214345
             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:        2026-02-12T14:40:05Z
             last-modified:  2026-02-12T14:40:05Z
             source:         RIPE
             
             % Information related to 'AS209237'
             
             % Abuse contact for 'AS209237' is 'network.manager@npl.co.uk'
             
             aut-num:        AS209237
             as-name:        NPL-MANG-LTD
             org:            ORG-NPL11-RIPE
             import:         from AS25180 accept ANY
             export:         to AS25180 announce AS209237
             import:         from AS786 accept ANY
             export:         to AS786 announce AS209237
             admin-c:        NPL13-RIPE
             admin-c:        DG13162-RIPE
             tech-c:         NPL13-RIPE
             tech-c:         DG13162-RIPE
             status:         ASSIGNED
             mnt-by:         RIPE-NCC-END-MNT
             mnt-by:         JANET-HOSTMASTER
             created:        2019-03-13T14:53:45Z
             last-modified:  2022-08-04T10:12:41Z
             source:         RIPE
             sponsoring-org: ORG-UA23-RIPE
             
             organisation:   ORG-NPL11-RIPE
             org-name:       NPL Management LTD
             country:        GB
             org-type:       OTHER
             address:        National Physical Laboratory
             address:        Hampton Road
             address:        Teddington
             address:        Middlesex
             address:        TW11 0LW
             address:        United Kingdom
             phone:          +44 208 943 6000
             reg-nr:         02937881
             admin-c:        DG13162-RIPE
             admin-c:        NPL13-RIPE
             tech-c:         DG13162-RIPE
             tech-c:         NPL13-RIPE
             abuse-c:        NPLA2-RIPE
             mnt-ref:        JANET-HOSTMASTER
             mnt-by:         JANET-HOSTMASTER
             mnt-by:         JIPS-NOSC
             created:        2019-03-11T12:30:26Z
             last-modified:  2026-04-29T07:13:04Z
             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 (DEXTER)