Report for 21520

Name

AS21520 - Instituto Tecnologico Autonomo de Mexico(ITAM), MX

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.

21520 AS21520 - Instituto Tecnologico Autonomo de Mexico(ITAM), MX

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS32098         TRANSTELCO-INC - Transtelco Inc, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS18734         AS18734 - Operbes, S.A. de C.V., MX

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
6649  AS21520        ORIGIN  Originate:      20992 /17.64  Transit:          0 /0.00  AS21520 - Instituto Tecnologico Autonomo de Mexico(ITAM), MX

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       %
21511 AS21520       AS21520 - Instituto Tecnologico Autonomo de M     23      2      1     22      1   4.35%


  Prefix               AS Path                              Aggregation Suggestion
  148.205.13.0/24      4608 7575 1299 18734 21520   
  148.205.36.0/22      4777 2497 3356 21520   
  148.205.40.0/22      4777 2497 3356 21520   
  148.205.48.0/22      4777 2497 3356 21520   
  148.205.56.0/21      4777 2497 3356 21520   
  148.205.64.0/21      4777 2497 3356 21520 + Announce - aggregate of 148.205.64.0/22 (4777 2497 3356 21520) and 148.205.68.0/22 (4777 2497 3356 21520)
  148.205.64.0/22      4777 2497 3356 21520 - Withdrawn - aggregated with 148.205.68.0/22 (4777 2497 3356 21520)
  148.205.68.0/22      4777 2497 3356 21520 - Withdrawn - aggregated with 148.205.64.0/22 (4777 2497 3356 21520)
  148.205.72.0/22      4777 2497 3356 21520   
  148.205.89.0/24      4608 7575 2914 32098 21520   
  148.205.90.0/24      4777 2497 3356 21520   
  148.205.104.0/21     4777 2497 3356 21520   
  148.205.112.0/22     4608 7575 1299 18734 21520   
  148.205.120.0/24     4777 2497 3356 21520   
  148.205.132.0/22     4777 2497 3356 21520   
  148.205.136.0/22     4777 2497 3356 21520   
  148.205.148.0/22     4777 2497 3356 21520   
  148.205.164.0/22     4777 2497 3356 21520   
  148.205.176.0/22     4777 2497 3356 21520   
  148.205.193.0/24     4608 7575 1299 18734 21520   
  148.205.195.0/24     4608 7575 1299 18734 21520   
  148.205.196.0/22     4777 2497 3356 21520   
  148.205.228.0/22     4777 2497 3356 21520   
  148.205.236.0/22     4777 2497 3356 21520   

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

AS21520   23 More Specifics   23 Total Advertisements   AS21520 - Instituto Tecnologico Autonomo de Mexico(ITAM), MX
    148.205.13.0/24               148.205.0.0/16
    148.205.36.0/22               148.205.0.0/16
    148.205.40.0/22               148.205.0.0/16
    148.205.48.0/22               148.205.0.0/16
    148.205.56.0/21               148.205.0.0/16
    148.205.64.0/22               148.205.0.0/16
    148.205.68.0/22               148.205.0.0/16
    148.205.72.0/22               148.205.0.0/16
    148.205.89.0/24               148.205.0.0/16
    148.205.90.0/24               148.205.0.0/16
    148.205.104.0/21              148.205.0.0/16
    148.205.112.0/22              148.205.0.0/16
    148.205.120.0/24              148.205.0.0/16
    148.205.132.0/22              148.205.0.0/16
    148.205.136.0/22              148.205.0.0/16
    148.205.148.0/22              148.205.0.0/16
    148.205.164.0/22              148.205.0.0/16
    148.205.176.0/22              148.205.0.0/16
    148.205.193.0/24              148.205.0.0/16
    148.205.195.0/24              148.205.0.0/16
    148.205.196.0/22              148.205.0.0/16
    148.205.228.0/22              148.205.0.0/16
    148.205.236.0/22              148.205.0.0/16

Whois Entry

whois: 402603

IANA has recorded AS21520 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS21520\n             % Joint Whois - whois.lacnic.net
             %  This server accepts single ASN, IPv4 or IPv6 queries
              
             
             Query rate limit exceeded