Report for 173

Name

NTTECL-AS Nippon Telegraph and Telephone Corporation, JP

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.

173 NTTECL-AS Nippon Telegraph and Telephone Corporation, JP

  Adjacency:     2  Upstream:     1  Downstream:     1
  Upstream Adjacent AS list
    AS2518          BIGLOBE BIGLOBE Inc., JP
  Downstream Adjacent AS list
    AS2511          CORE Nippon Telegraph and Telephone Corporation, JP

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
11131 AS173          ORG+TRN Originate:       8704 /18.91  Transit:      41728 /16.65 NTTECL-AS Nippon Telegraph and Telephone Corporation, JP

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       %
30657 AS173         NTTECL-AS Nippon Telegraph and Telephone Corp      2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  163.138.160.0/19     4777 2516 2518 173 173   
  192.47.168.0/23      4777 2516 2518 173 173   

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

AS173   1 More Specifics   2 Total Advertisements   NTTECL-AS Nippon Telegraph and Telephone Corporation, JP
    163.138.160.0/19              163.138.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS173 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS173\n             % [whois.apnic.net]
             % Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html
             
             % Information related to 'AS173'
             
             % Abuse contact for 'AS173' is 'rd-it-helpdesk@ml.ntt.com'
             
             aut-num:        AS173
             as-name:        NTTECL-AS
             descr:          Nippon Telegraph and Telephone Corporation
             country:        JP
             org:            ORG-NTAT1-AP
             admin-c:        TF79-AP
             tech-c:         TF79-AP
             abuse-c:        AN845-AP
             mnt-lower:      MAINT-JP-NTTECL-JP
             mnt-routes:     MAINT-JP-NTTECL-JP
             mnt-by:         APNIC-HM
             mnt-irt:        IRT-NTTECL-JP
             last-modified:  2023-01-11T04:52:30Z
             source:         APNIC
             
             irt:            IRT-NTTECL-JP
             address:        3-9-11 Midori-cho, Musashino-shi, Tokyo, Japan
             e-mail:         rd-it-helpdesk@ml.ntt.com
             abuse-mailbox:  rd-it-helpdesk@ml.ntt.com
             admin-c:        TF79-AP
             tech-c:         TF79-AP
             auth:           # Filtered
             remarks:        rd-it-helpdesk@ml.ntt.com was validated on 2026-02-26
             mnt-by:         MAINT-JP-NTTECL-JP
             last-modified:  2026-02-26T04:02:11Z
             source:         APNIC
             
             organisation:   ORG-NTAT1-AP
             org-name:       Nippon Telegraph and Telephone Corporation
             org-type:       LIR
             country:        JP
             address:        3-9-11 Midori-cho Musashino-shi
             phone:          +81-422-59-2725
             fax-no:         +81-422-59-5637
             e-mail:         it-pb@ml.ntt.com
             mnt-ref:        APNIC-HM
             mnt-by:         APNIC-HM
             last-modified:  2023-09-05T02:14:59Z
             source:         APNIC
             
             role:           ABUSE NTTECLJP
             country:        ZZ
             address:        3-9-11 Midori-cho, Musashino-shi, Tokyo, Japan
             phone:          +000000000
             e-mail:         rd-it-helpdesk@ml.ntt.com
             admin-c:        TF79-AP
             tech-c:         TF79-AP
             nic-hdl:        AN845-AP
             remarks:        Generated from irt object IRT-NTTECL-JP
             remarks:        rd-it-helpdesk@ml.ntt.com was validated on 2026-02-26
             abuse-mailbox:  rd-it-helpdesk@ml.ntt.com
             mnt-by:         APNIC-ABUSE
             last-modified:  2026-02-26T04:02:33Z
             source:         APNIC
             
             person:         Tomohiro Fujisaki
             nic-hdl:        TF79-AP
             e-mail:         fujisaki@venus.gr.jp
             address:        3-9-11 Midori-sho, Musashino-shi, Tokyo, Japan
             phone:          +81-422-59-7351
             fax-no:         +81-422-59-5652
             country:        JP
             mnt-by:         MAINT-JP-NTTECL-JP
             last-modified:  2022-07-21T13:05:18Z
             source:         APNIC
             
             % This query was served by the APNIC Whois Service version 1.88.36-SNAPSHOT (WHOIS-AU5)