Report for 52419

Name

AS52419 - CESOP, AR

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.

52419 AS52419 - CESOP, AR

  Adjacency:     3  Upstream:     1  Downstream:     2
  Upstream Adjacent AS list
    AS6057          AS6057 - Administracion Nacional de Telecomunicaciones, UY
  Downstream Adjacent AS list
    AS263241        AS263241 - MUNICIPALIDAD DE LA COSTA, AR
    AS267850        AS267850 - ALVES GOES WARLEY, AR

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
6791  AS52419        ORG+TRN Originate:      20480 /17.68  Transit:        512 /23.00 AS52419 - CESOP, AR

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       %
 1644 AS52419       AS52419 - CESOP, AR                               43     40      4      7     36  83.72%


  Prefix               AS Path                              Aggregation Suggestion
  38.3.152.0/21        4777 2497 6057 52419   
  38.7.8.0/22          4777 2497 6057 52419 + Announce - aggregate of 38.7.8.0/23 (4777 2497 6057 52419) and 38.7.10.0/23 (4777 2497 6057 52419)
  38.7.8.0/24          4777 2497 6057 52419 - Withdrawn - aggregated with 38.7.9.0/24 (4777 2497 6057 52419)
  38.7.9.0/24          4777 2497 6057 52419 - Withdrawn - aggregated with 38.7.8.0/24 (4777 2497 6057 52419)
  38.7.10.0/24         4777 2497 6057 52419 - Withdrawn - aggregated with 38.7.11.0/24 (4777 2497 6057 52419)
  38.7.11.0/24         4777 2497 6057 52419 - Withdrawn - aggregated with 38.7.10.0/24 (4777 2497 6057 52419)
  38.17.0.0/20         4777 2497 6057 52419   
  181.192.64.0/20      4777 2497 6057 52419 + Announce - aggregate of 181.192.64.0/21 (4777 2497 6057 52419) and 181.192.72.0/21 (4777 2497 6057 52419)
  181.192.64.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.65.0/24 (4777 2497 6057 52419)
  181.192.65.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.64.0/24 (4777 2497 6057 52419)
  181.192.66.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.67.0/24 (4777 2497 6057 52419)
  181.192.67.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.66.0/24 (4777 2497 6057 52419)
  181.192.68.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.69.0/24 (4777 2497 6057 52419)
  181.192.69.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.68.0/24 (4777 2497 6057 52419)
  181.192.70.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.71.0/24 (4777 2497 6057 52419)
  181.192.71.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.70.0/24 (4777 2497 6057 52419)
  181.192.72.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.73.0/24 (4777 2497 6057 52419)
  181.192.73.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.72.0/24 (4777 2497 6057 52419)
  181.192.74.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.75.0/24 (4777 2497 6057 52419)
  181.192.75.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.74.0/24 (4777 2497 6057 52419)
  181.192.76.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.77.0/24 (4777 2497 6057 52419)
  181.192.77.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.76.0/24 (4777 2497 6057 52419)
  181.192.78.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.79.0/24 (4777 2497 6057 52419)
  181.192.79.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 181.192.78.0/24 (4777 2497 6057 52419)
  200.31.240.0/20      4777 2497 6057 52419 + Announce - aggregate of 200.31.240.0/21 (4777 2497 6057 52419) and 200.31.248.0/21 (4777 2497 6057 52419)
  200.31.240.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.241.0/24 (4777 2497 6057 52419)
  200.31.241.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.240.0/24 (4777 2497 6057 52419)
  200.31.242.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.243.0/24 (4777 2497 6057 52419)
  200.31.243.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.242.0/24 (4777 2497 6057 52419)
  200.31.244.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.245.0/24 (4777 2497 6057 52419)
  200.31.245.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.244.0/24 (4777 2497 6057 52419)
  200.31.246.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.247.0/24 (4777 2497 6057 52419)
  200.31.247.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.246.0/24 (4777 2497 6057 52419)
  200.31.248.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.249.0/24 (4777 2497 6057 52419)
  200.31.249.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.248.0/24 (4777 2497 6057 52419)
  200.31.250.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.251.0/24 (4777 2497 6057 52419)
  200.31.251.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.250.0/24 (4777 2497 6057 52419)
  200.31.252.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.253.0/24 (4777 2497 6057 52419)
  200.31.253.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.252.0/24 (4777 2497 6057 52419)
  200.31.254.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.255.0/24 (4777 2497 6057 52419)
  200.31.255.0/24      4777 2497 6057 52419 - Withdrawn - aggregated with 200.31.254.0/24 (4777 2497 6057 52419)
  205.164.244.0/22     4777 2497 6057 52419 + Announce - aggregate of 205.164.244.0/23 (4777 2497 6057 52419) and 205.164.246.0/23 (4777 2497 6057 52419)
  205.164.244.0/24     4777 2497 6057 52419 - Withdrawn - aggregated with 205.164.245.0/24 (4777 2497 6057 52419)
  205.164.245.0/24     4777 2497 6057 52419 - Withdrawn - aggregated with 205.164.244.0/24 (4777 2497 6057 52419)
  205.164.246.0/24     4777 2497 6057 52419 - Withdrawn - aggregated with 205.164.247.0/24 (4777 2497 6057 52419)
  205.164.247.0/24     4777 2497 6057 52419 - Withdrawn - aggregated with 205.164.246.0/24 (4777 2497 6057 52419)
  216.28.224.0/20      4777 2497 6057 52419   

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

AS52419   43 More Specifics   43 Total Advertisements   AS52419 - CESOP, AR
    38.3.152.0/21                 38.0.0.0/8
    38.7.8.0/24                   38.0.0.0/8
    38.7.9.0/24                   38.0.0.0/8
    38.7.10.0/24                  38.0.0.0/8
    38.7.11.0/24                  38.0.0.0/8
    38.17.0.0/20                  38.0.0.0/8
    181.192.64.0/24               181.192.64.0/20
    181.192.65.0/24               181.192.64.0/20
    181.192.66.0/24               181.192.64.0/20
    181.192.67.0/24               181.192.64.0/20
    181.192.68.0/24               181.192.64.0/20
    181.192.69.0/24               181.192.64.0/20
    181.192.70.0/24               181.192.64.0/20
    181.192.71.0/24               181.192.64.0/20
    181.192.72.0/24               181.192.64.0/20
    181.192.73.0/24               181.192.64.0/20
    181.192.74.0/24               181.192.64.0/20
    181.192.75.0/24               181.192.64.0/20
    181.192.76.0/24               181.192.64.0/20
    181.192.77.0/24               181.192.64.0/20
    181.192.78.0/24               181.192.64.0/20
    181.192.79.0/24               181.192.64.0/20
    200.31.240.0/24               200.31.240.0/20
    200.31.241.0/24               200.31.240.0/20
    200.31.242.0/24               200.31.240.0/20
    200.31.243.0/24               200.31.240.0/20
    200.31.244.0/24               200.31.240.0/20
    200.31.245.0/24               200.31.240.0/20
    200.31.246.0/24               200.31.240.0/20
    200.31.247.0/24               200.31.240.0/20
    200.31.248.0/24               200.31.240.0/20
    200.31.249.0/24               200.31.240.0/20
    200.31.250.0/24               200.31.240.0/20
    200.31.251.0/24               200.31.240.0/20
    200.31.252.0/24               200.31.240.0/20
    200.31.253.0/24               200.31.240.0/20
    200.31.254.0/24               200.31.240.0/20
    200.31.255.0/24               200.31.240.0/20
    205.164.244.0/24              205.164.128.0/17
    205.164.245.0/24              205.164.128.0/17
    205.164.246.0/24              205.164.128.0/17
    205.164.247.0/24              205.164.128.0/17
    216.28.224.0/20               216.28.0.0/15

Whois Entry

whois: 402609

IANA has recorded AS52419 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS52419\n             % IP Client: 2401:2000:6660::13
              
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             %  By submitting a whois query, you agree to use this data
             %  only for lawful purposes.
             %  2026-06-11 00:39:24 (-03 -03:00)
             
             aut-num:     AS52419
             owner:       CESOP
             ownerid:     AR-CTSB1-LACNIC
             responsible: Patricio Martinez
             address:     Mitre, 2660, -
             address:     7111 - San Bernardo - BA
             country:     AR
             phone:       +54 2255 570210
             owner-c:     EZB2
             routing-c:   EZB2
             abuse-c:     EZB2
             created:     20121105
             changed:     20170214
             inetnum:     2803:3480::/32
             inetnum:     181.192.64.0/20
             inetnum:     200.31.240.0/20
             
             nic-hdl:     EZB2
             person:      Ezequiel Bianco
             e-mail:      timoneoy@gmail.com
             address:     Mitre, 2660, -
             address:     7111 - San Bernardo del Tuyu - Buenos Aires
             country:     AR
             phone:       +54  2257465300 [0000]
             created:     20170213
             changed:     20220103
             
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             % and AS numbers.