ASN Lookup Tool

Fundacao Casper Libero BR BR 4 Routes

AS Data

AS28275

AS28275 – Fundacao Casper Libero

AS Number 28275
AS Name
Organization Fundacao Casper Libero
Country BR
Number of IPv4 Routes 3
Number of IPv6 Routes 1
ASN type BUSINESS
Registry lacnic
Date Allocated 2007-03-22

ASN Intelligence API for production workflows

Use ASN data for AS28275 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

Get ASN API Key ASN API Docs

IP Ranges

Route # IPs
201.33.96.0/20 4096
2801:80:100::/64 ~18×10¹⁸
201.33.96.0/21 2048
201.33.104.0/21 2048

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.
% 2026-04-25T09:24:57-03:00 - 134.199.95.23

aut-num:     AS28275
owner:       Fundacao Casper Libero
responsible: William Rogerio de Oliveira
owner-c:     REFCL6
routing-c:   REFCL6
abuse-c:     REFCL6
created:     20070322
changed:     20250220
inetnum:     201.33.96.0/20
inetnum:     2801:80:100::/48

nic-hdl-br:  REFCL6
person:      Registar FCL
created:     20250218
changed:     20260424

% 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
AS199081 Lancom Ltd. GR
AS11432 Telium Telecomunica��es Ltda BR
AS262589 SAMM TECNOLOGIA E TELECOMUNICACOES S.A BR
AS6939 Hurricane Electric LLC US
AS60602 Inovare-Prim SRL MD
AS266142 Bahiadados Telecom Ltda. BR
AS14537 Continent 8 LLC US
AS198150 SIACOM JSC GE
AS4230 CLARO S.A. BR
AS269416 SEMEAR TELECOM EIRELI BR

Upstreams

AS Number Description Country
AS39120 Convergenze S.p.A. IT
AS6939 Hurricane Electric LLC US
AS6057 Administracion Nacional de Telecomunicaciones UY
AS10429 TELEFÓNICA BRASIL S.A BR
AS4230 CLARO S.A. BR

Ready to get started?Get Started with IP Intelligence API Today

Get Started
CTA Illustration

Frequently Asked Questions

ASN AS28275 is an Autonomous System Number used to identify a network for BGP internet routing.
AS28275 is listed under Fundacao Casper Libero.
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.