Report for 2501

Name

UTNET The University of Tokyo, 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.

2501 UTNET The University of Tokyo, JP

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS2907          SINET-AS Research Organization of Information and Systems, National Institute of Informatics, JP

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1278  AS2501         ORIGIN  Originate:     200704 /14.39  Transit:          0 /0.00  UTNET The University of Tokyo, 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       %
30259 AS2501        UTNET The University of Tokyo, JP                  4      0      0      4      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  130.69.0.0/16        4777 2516 2907 2501    
  133.11.0.0/16        4777 2907 2501         
  157.82.0.0/16        4777 2516 2907 2501    
  192.51.208.0/20      4777 2516 2907 2501    

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

AS2501   1 More Specifics   4 Total Advertisements   UTNET The University of Tokyo, JP
    133.11.0.0/16                 133.0.0.0/8

Whois Entry

whois: 402332

IANA has recorded AS2501 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS2501\n             % [whois.apnic.net]
             % Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html
             
             % Information related to 'AS2497 - AS2528'
             
             as-block:       AS2497 - AS2528
             descr:          JPNIC-2Byte-ASBLOCK-AP
             descr:          for assignment to JPNIC members
             country:        JP
             admin-c:        JNIC1-AP
             tech-c:         JNIC1-AP
             remarks:        Authoritative information regarding AS Number
             remarks:        assignments made from within this block can be
             remarks:        queried at whois.nic.ad.jp.
             remarks:        To only display English output,
             remarks:        add '/e' at the end of command,
             remarks:        e.g. 'whois -h whois.nic.ad.jp xxx/e'.
             mnt-by:         APNIC-HM
             mnt-lower:      MAINT-JPNIC
             last-modified:  2017-06-12T03:54:29Z
             source:         APNIC
             
             role:           Japan Network Information Center
             address:        Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
             address:        Chiyoda-ku, Tokyo 101-0047, Japan
             country:        JP
             phone:          +81-3-5297-2311
             fax-no:         +81-3-5297-2312
             e-mail:         hostmaster@nic.ad.jp
             admin-c:        JI13-AP
             tech-c:         JE53-AP
             nic-hdl:        JNIC1-AP
             mnt-by:         MAINT-JPNIC
             last-modified:  2022-01-05T03:04:02Z
             source:         APNIC
             
             % Information related to 'AS2501'
             
             aut-num:        AS2501
             as-name:        UTnet
             descr:          The University of Tokyo
             import:         from AS2500 100 accept ANY
             import:         from AS2907 100 accept ANY
             export:         to AS2500 announce AS2501
             export:         to AS2907 announce AS2501
             country:        JP
             admin-c:        MN010JP
             tech-c:         MN010JP
             tech-c:         YS7474JP
             last-modified:  2014-03-19T00:59:42Z
             remarks:        This information has been partially mirrored by APNIC from
             remarks:        JPNIC. To obtain more specific information, please use the
             remarks:        JPNIC WHOIS Gateway at
             remarks:        http://www.nic.ad.jp/en/db/whois/en-gateway.html or
             remarks:        whois.nic.ad.jp for WHOIS client. (The WHOIS client
             remarks:        defaults to Japanese output, use the /e switch for English
             remarks:        output)
             source:         JPNIC
             
             % This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU4)