Report for 37891

Name

JTIS - JR TOKAI Information Systems Company, 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.

37891 JTIS - JR TOKAI Information Systems Company, JP

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS2516          KDDI - KDDI CORPORATION, JP
    AS2497          IIJ - Internet Initiative Japan Inc., JP
    AS4713          OCN - NTT DOCOMO BUSINESS,Inc., JP

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
18191 AS37891        ORIGIN  Originate:       3840 /20.09  Transit:          0 /0.00  JTIS - JR TOKAI Information Systems Company, 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       %
16354 AS37891       JTIS - JR TOKAI Information Systems Company,       8      4      2      6      2  25.00%


  Prefix               AS Path                              Aggregation Suggestion
  58.147.160.0/21      4777 4713 37891        
  58.147.162.0/23      4777 2497 37891      + Announce - aggregate of 58.147.162.0/24 (4777 2497 37891) and 58.147.163.0/24 (4777 2497 37891)
  58.147.162.0/24      4777 2497 37891      - Withdrawn - aggregated with 58.147.163.0/24 (4777 2497 37891)
  58.147.163.0/24      4777 2497 37891      - Withdrawn - aggregated with 58.147.162.0/24 (4777 2497 37891)
  58.147.165.0/24      4777 2497 37891        
  58.147.166.0/23      4777 2497 37891      + Announce - aggregate of 58.147.166.0/24 (4777 2497 37891) and 58.147.167.0/24 (4777 2497 37891)
  58.147.166.0/24      4777 2497 37891      - Withdrawn - aggregated with 58.147.167.0/24 (4777 2497 37891)
  58.147.167.0/24      4777 2497 37891      - Withdrawn - aggregated with 58.147.166.0/24 (4777 2497 37891)
  192.218.65.0/24      4777 4713 37891        
  192.218.66.0/24      4777 4713 37891        

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

AS37891   7 More Specifics   8 Total Advertisements   JTIS - JR TOKAI Information Systems Company, JP
    58.147.162.0/24               58.147.160.0/21
    58.147.163.0/24               58.147.160.0/21
    58.147.165.0/24               58.147.160.0/21
    58.147.166.0/24               58.147.160.0/21
    58.147.167.0/24               58.147.160.0/21
    192.218.65.0/24               192.218.0.0/16
    192.218.66.0/24               192.218.0.0/16

Whois Entry

whois: 402591

IANA has recorded AS37891 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS37891\n