Report for 50077

Name

SYN-NL - SYN 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.

50077 SYN-NL - SYN LTD, GB

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS29802         HVC-AS - HIVELOCITY, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
9408  AS50077        ORIGIN  Originate:      11776 /18.48  Transit:          0 /0.00  SYN-NL - SYN 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       %
23455 AS50077       SYN-NL - SYN LTD, GB                              12      2      1     11      1   8.33%


  Prefix               AS Path                              Aggregation Suggestion
  43.239.88.0/22       4777 2497 1299 29802 50077   
  91.210.64.0/22       4777 2497 1299 29802 50077   
  103.206.232.0/22     4777 2497 1299 29802 50077   
  107.181.156.0/22     4777 2497 1299 29802 50077   
  155.254.40.0/21      4777 2497 1299 29802 50077 + Announce - aggregate of 155.254.40.0/22 (4777 2497 1299 29802 50077) and 155.254.44.0/22 (4777 2497 1299 29802 50077)
  155.254.40.0/22      4777 2497 1299 29802 50077 - Withdrawn - aggregated with 155.254.44.0/22 (4777 2497 1299 29802 50077)
  155.254.44.0/22      4777 2497 1299 29802 50077 - Withdrawn - aggregated with 155.254.40.0/22 (4777 2497 1299 29802 50077)
  155.254.50.0/23      4777 2497 1299 29802 50077   
  155.254.52.0/22      4777 2497 1299 29802 50077   
  155.254.56.0/22      4777 2497 1299 29802 50077   
  185.135.212.0/22     4777 2497 1299 29802 50077   
  198.105.96.0/22      4777 2497 1299 29802 50077   
  198.105.104.0/22     4777 2497 1299 29802 50077   

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

AS50077   8 More Specifics   12 Total Advertisements   SYN-NL - SYN LTD, GB
    107.181.156.0/22              107.181.128.0/19
    155.254.40.0/22               155.254.32.0/19
    155.254.44.0/22               155.254.32.0/19
    155.254.50.0/23               155.254.32.0/19
    155.254.52.0/22               155.254.32.0/19
    155.254.56.0/22               155.254.32.0/19
    198.105.96.0/22               198.105.96.0/19
    198.105.104.0/22              198.105.96.0/19

Whois Entry

whois: 402603

IANA has recorded AS50077 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS50077\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 'AS50050 - AS50218'
             
             as-block:       AS50050 - AS50218
             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:        2024-12-06T06:09:56Z
             last-modified:  2024-12-06T06:09:56Z
             source:         RIPE
             
             % Information related to 'AS50077'
             
             % Abuse contact for 'AS50077' is 'abuse@syn.one'
             
             aut-num:        AS50077
             as-name:        SYN-NL
             descr:          SYN
             org:            ORG-ZL31-RIPE
             import:         from AS29802 accept ANY
             export:         to AS29802 announce AS-SYN
             admin-c:        SYN16-RIPE
             tech-c:         SYN16-RIPE
             status:         ASSIGNED
             mnt-by:         MNT-SYN
             mnt-by:         RIPE-NCC-END-MNT
             created:        2016-01-26T08:06:06Z
             last-modified:  2025-04-14T16:20:12Z
             source:         RIPE
             
             organisation:   ORG-ZL31-RIPE
             org-name:       SYN LTD
             country:        GB
             reg-nr:         09243303
             org-type:       LIR
             address:        Crown House, 27 Old Gloucester Street
             address:        WC1N 3AX
             address:        London
             address:        UNITED KINGDOM
             phone:          +442476980698
             abuse-c:        SYN16-RIPE
             mnt-ref:        MNT-SYN
             mnt-ref:        RIPE-NCC-HM-MNT
             mnt-by:         RIPE-NCC-HM-MNT
             mnt-by:         MNT-SYN
             created:        2015-01-12T15:01:45Z
             last-modified:  2026-05-13T07:36:01Z
             source:         RIPE # Filtered
             
             role:           SYN LTD
             address:        Crown House, 27 Old Gloucester Street
             address:        London, WC1N 3AX
             address:        UNITED KINGDOM
             abuse-mailbox:  abuse@syn.one
             nic-hdl:        SYN16-RIPE
             mnt-by:         MNT-SYN
             created:        2016-02-10T12:33:51Z
             last-modified:  2022-10-07T13:21:59Z
             source:         RIPE # Filtered
             
             % This query was served by the RIPE Database Query Service version 1.122.1 (BUSA)