Report for 3661

Name

ERX-CUHKNET The Chinese University of Hong Kong, HK

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.

3661 ERX-CUHKNET The Chinese University of Hong Kong, HK

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS3662          HARNET Joint Universities Computer Centre Limited, HK
    AS137207        JUCC-AS-AP Joint Universities Computer Centre Limited, HK

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
2878  AS3661         ORIGIN  Originate:      74240 /15.82  Transit:          0 /0.00  ERX-CUHKNET The Chinese University of Hong Kong, HK

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       %
31324 AS3661        ERX-CUHKNET The Chinese University of Hong Ko      7      0      0      7      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  103.49.160.0/22      4777 137207 3661       
  123.255.64.0/21      4777 137207 3661       
  137.189.0.0/16       4777 137207 3661       
  137.189.196.0/24     4777 137207 3662 3661   
  175.159.224.0/22     4777 137207 3661       
  202.40.216.0/24      4777 137207 3661       
  203.188.64.0/20      4777 137207 3661       

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

AS3661   5 More Specifics   7 Total Advertisements   ERX-CUHKNET The Chinese University of Hong Kong, HK
    123.255.64.0/21               123.255.64.0/20
    137.189.196.0/24              137.189.0.0/16
    175.159.224.0/22              175.159.0.0/16
    202.40.216.0/24               202.40.192.0/19
    203.188.64.0/20               203.188.64.0/18

Whois Entry

whois: 402332

IANA has recorded AS3661 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS3661\n             % [whois.apnic.net]
             % Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html
             
             % Information related to 'AS3661'
             
             % Abuse contact for 'AS3661' is 'noc-admin@cuhk.edu.hk'
             
             aut-num:        AS3661
             as-name:        ERX-CUHKNET
             descr:          The Chinese University of Hong Kong
             descr:          Information Technology Services Centre
             country:        HK
             remarks:        This aut-num object created as part of the ER-Transfer from ARIN
             org:            ORG-CUOH1-AP
             admin-c:        NA17-AP
             tech-c:         NT27-AP
             abuse-c:        AC2019-AP
             mnt-by:         APNIC-HM
             mnt-lower:      MAINT-CUHKNET-HK
             mnt-routes:     MAINT-CUHKNET-HK
             mnt-irt:        IRT-CUHKNET-HK
             last-modified:  2022-12-05T02:41:49Z
             source:         APNIC
             
             irt:            IRT-CUHKNET-HK
             address:        Information Technology Services Centre,
             address:        The Chinese University of Hong Kong,
             address:        Shatin, N.T.
             address:        Hong Kong
             e-mail:         noc-admin@cuhk.edu.hk
             abuse-mailbox:  noc-admin@cuhk.edu.hk
             admin-c:        NA17-AP
             tech-c:         NT27-AP
             auth:           # Filtered
             remarks:        noc-admin@cuhk.edu.hk was validated on 2025-11-12
             mnt-by:         MAINT-CUHKNET-HK
             last-modified:  2025-11-18T00:26:31Z
             source:         APNIC
             
             organisation:   ORG-CUOH1-AP
             org-name:       The Chinese University of Hong Kong
             org-type:       LIR
             country:        HK
             address:        Information Technology Service Centre
             address:        G/F., Pi-Chiu Building
             phone:          +852-3943-8848
             fax-no:         +852-2603-5001
             e-mail:         noc-admin@cuhk.edu.hk
             mnt-ref:        APNIC-HM
             mnt-by:         APNIC-HM
             last-modified:  2023-09-05T02:14:42Z
             source:         APNIC
             
             role:           ABUSE CUHKNETHK
             country:        ZZ
             address:        Information Technology Services Centre,
             address:        The Chinese University of Hong Kong,
             address:        Shatin, N.T.
             address:        Hong Kong
             phone:          +000000000
             e-mail:         noc-admin@cuhk.edu.hk
             admin-c:        NA17-AP
             tech-c:         NT27-AP
             nic-hdl:        AC2019-AP
             remarks:        Generated from irt object IRT-CUHKNET-HK
             remarks:        noc-admin@cuhk.edu.hk was validated on 2025-11-12
             abuse-mailbox:  noc-admin@cuhk.edu.hk
             mnt-by:         APNIC-ABUSE
             last-modified:  2025-11-12T01:03:41Z
             source:         APNIC
             
             person:         Network Administration Contact
             address:        Information Technology Services Centre,
             address:        The Chinese University of Hong Kong,
             address:        Shatin, N.T.
             address:        Hong Kong
             country:        HK
             phone:          +852-3943-8830
             fax-no:         +852-2603-5001
             e-mail:         noc-admin@cuhk.edu.hk
             nic-hdl:        NA17-AP
             notify:         noc-admin@cuhk.edu.hk
             mnt-by:         MAINT-CUHKNET-HK
             last-modified:  2012-09-19T01:45:32Z
             source:         APNIC
             
             person:         Network Technical Contact
             address:        Information Technology Services Centre,
             address:        The Chinese University of Hong Kong,
             address:        Shatin, N.T.
             address:        Hong Kong
             country:        HK
             phone:          +852-3943-8830
             fax-no:         +852-2603-5001
             e-mail:         noc-tech@cuhk.edu.hk
             nic-hdl:        NT27-AP
             notify:         noc-tech@cuhk.edu.hk
             mnt-by:         MAINT-CUHKNET-HK
             last-modified:  2012-09-19T01:46:08Z
             source:         APNIC
             
             % This query was served by the APNIC Whois Service version 1.88.47 (WHOIS-AU4)