Report for 18420

Name

NCU-TW National Central University, 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 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.

18420 NCU-TW National Central University, TW

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS7539          TWAREN-TW National Center for High-performance Computing, TW
    AS18185         NTCU-AS-TW 4F, No.114, Sec.1, Chung-Shiao W. Road, TW

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
3708  AS18420        ORIGIN  Originate:      65536 /16.00  Transit:          0 /0.00  NCU-TW National Central University, 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       %
34308 AS18420       NCU-TW National Central University, TW             1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  140.115.0.0/16       4608 7575 11537 7539 18420   

Whois Entry

whois: 402332

IANA has recorded AS18420 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.net -r "AS18420\n             % [whois.apnic.net]
             % Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html
             
             % Information related to 'AS17653 - AS18431'
             
             as-block:       AS17653 - AS18431
             descr:          APNIC ASN block
             remarks:        These AS numbers are further assigned by APNIC
             remarks:        to APNIC members and end-users in the APNIC region
             admin-c:        HM20-AP
             tech-c:         HM20-AP
             mnt-by:         APNIC-HM
             mnt-lower:      APNIC-HM
             last-modified:  2019-01-08T23:19:07Z
             source:         APNIC
             
             % Information related to 'AS18410 - AS18429'
             
             as-block:       AS18410 - AS18429
             descr:          TWNIC-TW-AS-BLOCK8
             remarks:        These AS numbers are further assigned by TWNIC
             remarks:        to TWNIC members
             admin-c:        TWA2-AP
             tech-c:         TWA2-AP
             mnt-by:         MAINT-TW-TWNIC
             mnt-lower:      MAINT-TW-TWNIC
             last-modified:  2008-09-04T06:40:26Z
             source:         APNIC
             
             % Information related to 'AS18420'
             
             % Abuse contact for 'AS18420' is 'noc@mail.moe.gov.tw'
             
             aut-num:        AS18420
             as-name:        NCU-TW
             descr:          National Central University
             descr:          No.300, Jungda Rd, Jhongli City,
             descr:          Taoyuan
             country:        TW
             import:         from AS3462 action pref=100; accept ANY
             import:         from AS9676 action pref=100; accept ANY
             import:         from AS18182 action pref=100; accept ANY
             export:         to AS3462 announce AS18420
             export:         to AS9676 announce AS18420
             export:         to AS18182 announce AS18420
             default:        to AS1659 action pref=10; networks ANY
             admin-c:        CL184-AP
             tech-c:         SY81-AP
             abuse-c:        AT939-AP
             notify:         center7@cc.ncu.edu.tw
             mnt-by:         MAINT-TW-TWNIC
             mnt-irt:        IRT-TANET-TW
             last-modified:  2025-11-06T09:25:57Z
             source:         APNIC
             
             % This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU4)