ASN Lookup Tool

Cizol Com. e Servi�os de Equip de Informatica Ltda BR BR 2 Routes

AS Data

AS28251

AS28251 – Cizol Com. e Servi�os de Equip de Informatica Ltda

AS Number 28251
AS Name
Organization Cizol Com. e Servi�os de Equip de Informatica Ltda()
Country BR
Number of IPv4 Routes 2
Number of IPv6 Routes 0
ASN type BUSINESS
Registry lacnic
Date Allocated 2008-09-18

ASN Intelligence API for production workflows

Use ASN data for AS28251 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route # IPs
187.1.153.0/24 256
187.1.144.0/20 4096

Raw Whois Response

% 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.
% 2026-03-16T09:14:16-03:00 - 213.159.10.82

aut-num:     AS28251
owner:       Cizol Com. e Servi�os de Equip de Informatica Ltda
responsible: Ciro dos Reis Cerqueira
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
created:     20150914
changed:     20250505

nic-hdl-br:  SUW3
person:      Suporte Wavenet
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.

Parsed Whois Response

Peers

AS Number Description Country
AS28186 ITS TELECOMUNICACOES LTDA BR

Upstreams

AS Number Description Country
AS28186 ITS TELECOMUNICACOES LTDA BR

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Frequently Asked Questions

ASN AS28251 is an Autonomous System Number used to identify a network for BGP internet routing.
AS28251 is listed under Cizol Com. e Servi�os de Equip de Informatica Ltda.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.