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If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	143.255.0.0/23	DUPONT & SCHWANKE LTDA
	143.255.0.0/22	DUPONT & SCHWANKE LTDA
	143.255.2.0/23	DUPONT & SCHWANKE LTDA
	143.255.2.0/24	-
	2804:2b34::/32	DUPONT & SCHWANKE LTDA
	2804:2b34::/34	DUPONT & SCHWANKE LTDA
	2804:2b34::/33	DUPONT & SCHWANKE LTDA
	2804:2b34:4000::/34	DUPONT & SCHWANKE LTDA
	2804:2b34:8000::/33	DUPONT & SCHWANKE LTDA
	2804:2b34:c000::/34	DUPONT & SCHWANKE LTDA

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS28283	Adyl Telecom	✔	✔
	AS273810	CM TECNOLOGIA INTEGRADA LTDA	✔	✘
	AS53062	ALT | GRUPO BRASIL TECPAR	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS6939	Hurricane Electric LLC	✔	✔
	AS28283	Adyl Telecom	✔	✔
	AS273810	CM TECNOLOGIA INTEGRADA LTDA	✔	✘
	AS53062	ALT | GRUPO BRASIL TECPAR	✔	✔
	AS35280	F5 Networks SARL	✔	✔
	AS199524	Gcore S.A.	✔	✔
	AS37468	Angola Cables	✔	✔
	AS52320	V.tal (GlobeNet)	✘	✔
	AS214331	Teske Virtual System Ltda	✔	✔
	AS14537	Continent 8 LLC	✔	✔
	AS271253	LINK BRASIL TELECOMUNICACOES LTDA	✔	✔
	AS40776	TaoNet	✔	✔
	AS269180	VIPNET Conexão	✔	✔
	AS215248	Bastiaan Mathijs Brink	✔	✔
	AS2635	Automattic, Inc	✔	✔
	AS266400	Ferenz Networks	✔	✔
	AS52999	START TELECOM LTDA	✔	✔
	AS9498	Bharti Airtel Ltd.	✔	✘
	AS32590	Valve Corporation	✔	✔
	AS263903	INFORBARRA TELECOM	✔	✔
	AS214757	Jakub Krsa	✘	✔
	AS64049	Reliance Jio Infocomm Pte. Ltd.	✔	✘
	AS36236	NetActuate, Inc	✔	✔
	AS1916	RNP - Rede Nacional de Ensino e Pesquisa	✔	✔
	AS6424	EDGOO NETWORKS	✔	✔
	AS213622	Falcon FZE LLC	✔	✔
	AS262287	Latitude.sh LTDA	✔	✔
	AS61680	ACESSO SIMPLES LTDA	✔	✔
	AS52888	UNIVERSIDADE FEDERAL DE SAO CARLOS	✔	✔
	AS274676	MULTIWAY COMERCIO E REPRESENTACOES LTDA	✔	✔
	AS42473	Anexia Cloud Solutions GmbH	✔	✔
	AS270684	SOLUCOES SOUZA WEB LTDA	✔	✔
	AS269641	RURALNET BRASIL	✔	✔
	AS262462	Aranet Play	✔	✔
	AS14907	Wikimedia Foundation Inc.	✔	✔
	AS263152	MIGO TELECOM	✔	✔
	AS61624	ISPSHIELD (InfNOC Tecnologia)	✔	✔
	AS270824	ENX Services	✔	✔
	AS401661	EMBNEX, LLC	✔	✔
	AS24482	SG.GS	✔	✔
	AS6057	Administracion Nacional de Telecomunicaciones	✔	✔
	AS1251	FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO SÃO PAULO	✔	✔
	AS271247	RS Sul Telecomunicações Ltda	✔	✔
	AS7713	PT Telkom Indonesia Tbk	✔	✘
	AS328366	FIRSTNET TECHNOLOGY SERVICES (PTY) LTD	✔	✘
	AS270470	LN TELECOM	✔	✔
	AS269396	UNIR TELECOM	✔	✔
	AS263541	IMF NETWORK DATA LTDA - ME	✔	✔
	AS266196	BRASCOM SOLUCOES E TECNOLOGIA LTDA ME	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS60503	FNX Tecnologia LTDA	✔	✔
	AS267613	ELETRONET S.A.	✔	✔
	AS199829	Akronic Network LTDA	✘	✔
	AS39120	Convergenze S.p.A.	✘	✔
	AS265038	TELFO SERVICO DE TELECOMUNICACOES LTDA	✔	✘
	AS34170	Aztelekom LLC	✔	✘
	AS200464	PAULO HENRIQUE SILVA DE OLIVEIRA	✘	✔
	AS262880	RADAR WISP LTDA	✔	✘
	AS264409	Huge Networks	✔	✘
	AS265169	VIPNETT TELECOM	✔	✘
	AS263661	Brasil Digital Telecom	✔	✘
	AS29049	Delta Telecom Ltd	✔	✘
	AS199081	Lancom Ltd.	✔	✘
	AS270735	COMPUTIZE NETWORK TELECOMUNICACOES LTDA	✔	✘
	AS132337	Axclusive	✔	✘
	AS262999	IVI TECNOLOGIA E COMUNICAÇÃO LTDA	✔	✘
	AS269070	Hostzone Tecnologia LTDA	✔	✘
	AS1031	PEER 1031 LLC	✔	✘
	AS262832	Link Cariri	✘	✔

% IP Client: 2a0c:2f07:9459:2c13:0:0:0:247
 % 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.
% 2026-01-22T11:43:29-03:00 - 2a0c:2f07:9459:2c13::247

aut-num:     AS265140
owner:       DUPONT & SCHWANKE LTDA
ownerid:     08.998.307/0001-35
responsible: MATEUS DUPONT
country:     BR
owner-c:     MADUP5
routing-c:   MADUP5
abuse-c:     MADUP5
created:     20151112
changed:     20151112
inetnum:     143.255.0.0/22
inetnum:     2804:2b34::/32

nic-hdl-br:  MADUP5
person:      Mateus Dupont
# Email removed, Log into bgp.tools to see whois emails/phone numbers
country:     BR
created:     20110524
changed:     20240127

% 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.

Last Update: 2026-01-22T14:43:29Z UTC

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Member of the following AS-SETs

-	Member
RADB	as53013:as-cone
RADB	as-267613
RADB	as-8167-bgp-customers
RADB	as-rocketnetwork-customers
ALTDB	as263877:as-customers
RADB	as-adylnet-customers
ALTDB	as263650:as-customers
RADB	as-embratelnet
RADB	as-ctbc-customers51
RADB	as-53427-tgn
RADB	as-ctbc-tools-2
RADB	as-hurricanev6
RADB	as-hugenet-customers
ALTDB	as-265140
RADB	as3491:as-customers-na
RADB	as-ufinet-latam-brasil
RADB	as-linkar
ALTDB	as264329:as-customers
RADB	as28220:as-transit
RADB	as-8167_customers
RADB	as268862:as-bracust
RADB	as-21574-customers
RADB	as-rocketnetwork-tools-2
RADB	as14840:as-customers-05
ALTDB	as-53062-customers
RADB	as28146:as-clients
RIPE	as-stormwall-set
RADB	as-sb-automation-customer
RADB	as61568:as-aloo-telecom
RADB	as-e1-automation-customer
RADB	as-53427-tglobal
RADB	as-hurricane
RADB	as-ctbc-customers87
ALTDB	as265075:as-customers
RADB	as-durand1-customer
RADB	as-stormwall-set
ALTDB	as28610:as-customers
RADB	as-fortel-customers