Report for 23675

Name

TSMCGDN-AS-AP - Taiwan Semiconductor Manufactoring Company, Ltd., TW

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 AS6447) 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.

23675 TSMCGDN-AS-AP Taiwan Semiconductor Manufactoring Company, Ltd., TW

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS13335         CLOUDFLARENET, US
    AS4780          SEEDNET Digital United Inc., TW

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
15585 AS23675        ORIGIN  Originate:       4864 /19.75  Transit:          0 /0.00  TSMCGDN-AS-AP Taiwan Semiconductor Manufactoring Company, Ltd., TW

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       %
 4654 AS23675       TSMCGDN-AS-AP Taiwan Semiconductor Manufactor     19     14      3      8     11  57.89%


  Prefix               AS Path                              Aggregation Suggestion
  106.105.110.0/24     6939 4780 23675        
  202.126.64.0/21      7018 13335 23675     + Announce - aggregate of 202.126.64.0/22 (7018 13335 23675) and 202.126.68.0/22 (7018 13335 23675)
  202.126.64.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.65.0/24 (7018 13335 23675)
  202.126.65.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.64.0/24 (7018 13335 23675)
  202.126.66.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.67.0/24 (7018 13335 23675)
  202.126.67.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.66.0/24 (7018 13335 23675)
  202.126.68.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.69.0/24 (7018 13335 23675)
  202.126.69.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.68.0/24 (7018 13335 23675)
  202.126.70.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.71.0/24 (7018 13335 23675)
  202.126.71.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.70.0/24 (7018 13335 23675)
  202.126.72.0/22      7018 13335 23675     + Announce - aggregate of 202.126.72.0/23 (7018 13335 23675) and 202.126.74.0/23 (7018 13335 23675)
  202.126.72.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.73.0/24 (7018 13335 23675)
  202.126.73.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.72.0/24 (7018 13335 23675)
  202.126.74.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.75.0/24 (7018 13335 23675)
  202.126.75.0/24      7018 13335 23675     - Withdrawn - aggregated with 202.126.74.0/24 (7018 13335 23675)
  203.66.100.0/23      7018 13335 23675     + Announce - aggregate of 203.66.100.0/24 (7018 13335 23675) and 203.66.101.0/24 (7018 13335 23675)
  203.66.100.0/24      7018 13335 23675     - Withdrawn - aggregated with 203.66.101.0/24 (7018 13335 23675)
  203.66.101.0/24      7018 13335 23675     - Withdrawn - aggregated with 203.66.100.0/24 (7018 13335 23675)
  203.66.102.0/24      7018 13335 23675       
  203.66.245.0/24      7018 13335 23675       
  208.70.204.0/24      7018 13335 23675       
  220.128.55.0/24      7018 13335 23675       

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

AS23675   13 More Specifics   13 Total Advertisements   TSMCGDN-AS-AP Taiwan Semiconductor Manufactoring Company, Ltd., TW
    106.105.110.0/24              106.104.0.0/14
    202.126.64.0/24               202.126.64.0/20
    202.126.65.0/24               202.126.64.0/20
    202.126.66.0/24               202.126.64.0/20
    202.126.67.0/24               202.126.64.0/20
    202.126.68.0/24               202.126.64.0/20
    202.126.69.0/24               202.126.64.0/20
    202.126.70.0/24               202.126.64.0/20
    202.126.71.0/24               202.126.64.0/20
    202.126.72.0/24               202.126.64.0/20
    202.126.73.0/24               202.126.64.0/20
    202.126.74.0/24               202.126.64.0/20
    202.126.75.0/24               202.126.64.0/20
    203.66.100.0/24               203.64.0.0/14
    203.66.101.0/24               203.64.0.0/14
    203.66.102.0/24               203.64.0.0/14
    203.66.245.0/24               203.64.0.0/14
    208.70.204.0/24               208.70.200.0/21
    220.128.55.0/24               220.128.0.0/18

Prefixes added and withdrawn by this origin AS in the past 7 days.

    - 203.66.100.0/24             Withdrawn
    - 203.66.101.0/24             Withdrawn
    - 203.66.102.0/24             Withdrawn
    - 203.66.245.0/24             Withdrawn
    - 208.70.204.0/24             Withdrawn
    - 220.128.55.0/24             Withdrawn

Whois Entry

whois: 402590

IANA has recorded AS23675 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS23675\n