Report for 28251

Name

AS28251 - Cizol Com. e Servicos de Equip de Informatica Ltda, BR

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 AS6447) 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.

28251 Cizol Com. e Servicos de Equip de Informatica Ltda, BR

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS28186         ITS TELECOMUNICACOES LTDA, BR

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
16396 AS28251        ORIGIN  Originate:       4352 /19.91  Transit:          0 /0.00  Cizol Com. e Servicos de Equip de Informatica Ltda, BR

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       %
38343 AS28251       Cizol Com. e Servicos de Equip de Informatica      2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  187.1.144.0/20       3549 3356 28186 28251   
  187.1.153.0/24       7018 3356 28186 28251   

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

AS28251   11 More Specifics   12 Total Advertisements   Cizol Com. e Servicos de Equip de Informatica Ltda, BR
    187.1.146.0/23                187.1.144.0/20
    187.1.147.0/24                187.1.144.0/20
    187.1.148.0/23                187.1.144.0/20
    187.1.148.0/24                187.1.144.0/20
    187.1.149.0/24                187.1.144.0/20
    187.1.150.0/23                187.1.144.0/20
    187.1.152.0/23                187.1.144.0/20
    187.1.154.0/23                187.1.144.0/20
    187.1.156.0/23                187.1.144.0/20
    187.1.158.0/23                187.1.144.0/20
    187.1.158.0/24                187.1.144.0/20
    187.1.153.0/24                187.1.144.0/20

Prefixes added and withdrawn by this origin AS in the past 7 days.

    - 187.1.153.0/24              Withdrawn

Whois Entry

whois: 402613

IANA has recorded AS28251 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS28251\n             % IP Client: 2401:2000:6660::13
              % Copyright (c) Nic.br - Use of this data is governed by the Use and
             % Privacy Policy at https://registro.br/upp . Distribution,
             % commercialization, reproduction, and use for advertising or similar
             % purposes are expressly prohibited.
             % 2026-06-12T01:54:01-03:00 - 2401:2000:6660::13
             
             aut-num:     AS28251
             owner:       Cizol Com. e Servi�os de Equip de Informatica Ltda
             ownerid:     07.097.497/0001-57
             responsible: Ciro dos Reis Cerqueira
             country:     BR
             owner-c:     CDRCE3
             routing-c:   SUW3
             abuse-c:     SUW3
             created:     20080918
             changed:     20160906
             inetnum:     187.1.144.0/20
             
             nic-hdl-br:  CDRCE3
             person:      CIRO DOS REIS CERQUEIRA
             e-mail:      ciro@cizol.com.br
             country:     BR
             created:     20150914
             changed:     20250505
             
             nic-hdl-br:  SUW3
             person:      Suporte Wavenet
             e-mail:      marcone@wavenet.com.br
             country:     BR
             created:     20020114
             changed:     20150914
             
             % Security and mail abuse issues should also be addressed to cert.br,
             % respectivelly to cert@cert.br and mail-abuse@cert.br
             %
             % whois.registro.br only accepts exact match queries for domains,
             % registrants, contacts, tickets, providers, IPs, and ASNs.