What is ASN AS266546?

ASN AS266546 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS266546?

AS266546 is listed under TWF NET PROVEDOR DE INTERNET LTDA.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS266546 TWF NET PROVEDOR DE INTERNET LTDA

ASN Lookup Tool

Search ASN

AS Data

IP Routes

Raw Whois

Parsed Whois

Peers

Upstreams

Downstreams

Contacts

Legacy Routes

TWF NET PROVEDOR DE INTERNET LTDA twf.net.br

BR 10 Routes

AS Data

AS266546

AS266546 – TWF NET PROVEDOR DE INTERNET LTDA

AS Number	266546
AS Name	26.578.190/0001-12
Organization	TWF NET PROVEDOR DE INTERNET LTDA
Country	BR
Website	twf.net.br
Number of IPv4 Routes	7
Number of IPv6 Routes	3
ASN type	ISP
Registry	lacnic
Date Allocated	2017-05-12

ASN Intelligence API for production workflows

Use ASN data for AS266546 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	Origin	Origin Name	ISP	# IPs
160.238.196.0/22	AS266546	TWF NET PROVEDOR DE INTERNET LTDA	TWF NET PROVEDOR DE INTERNET LTDA	1024
160.238.196.0/24	AS266546	TWF NET PROVEDOR DE INTERNET LTDA	TWF NET PROVEDOR DE INTERNET LTDA	256
160.238.198.0/24	AS266546	TWF NET PROVEDOR DE INTERNET LTDA	TWF NET PROVEDOR DE INTERNET LTDA	256
160.238.197.0/24	AS266546	TWF NET PROVEDOR DE INTERNET LTDA	TWF NET PROVEDOR DE INTERNET LTDA	256
160.238.196.0/23	AS266546	TWF NET PROVEDOR DE INTERNET LTDA	TWF NET PROVEDOR DE INTERNET LTDA	512
2804:3dac::/32	AS266546	TWF NET PROVEDOR DE INTERNET LTDA	TWF NET PROVEDOR DE INTERNET LTDA	~79×10²⁷
160.238.199.0/24	AS266546	TWF NET PROVEDOR DE INTERNET LTDA	TWF NET PROVEDOR DE INTERNET LTDA	256
2804:3dac:100::/40	AS266546	TWF NET PROVEDOR DE INTERNET LTDA	TWF NET PROVEDOR DE INTERNET LTDA	~309×10²⁴
2804:3dac::/40	AS266546	TWF NET PROVEDOR DE INTERNET LTDA	TWF NET PROVEDOR DE INTERNET LTDA	~309×10²⁴
160.238.198.0/23	AS266546	TWF NET PROVEDOR DE INTERNET LTDA	TWF NET PROVEDOR DE INTERNET LTDA	512

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.
% 2026-08-22T09:19:52-03:00 - 136.227.183.102

aut-num:     AS266546
owner:       TWF NET PROVEDOR DE INTERNET LTDA
ownerid:     26.578.190/0001-12
responsible: Gr�gory H. Ebertz
country:     BR
owner-c:     GRE23
routing-c:   GRE23
abuse-c:     GRE23
created:     20170512
changed:     20210205
inetnum:     160.238.196.0/22
inetnum:     2804:3dac::/32
as-in:       from AS53062 100 accept ANY
as-out:      to AS53062 announce AS266546

nic-hdl-br:  GRE23
person:      Gr�gory Ebertz
e-mail:      contato@twf.net.br
country:     BR
created:     20031220
changed:     20260401

% 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

{
  "status" : true,
  "whois_server" : "whois.lacnic.net",
  "aut_nums" : [ {
    "aut_num" : "AS266546",
    "country" : "BR",
    "admin_contacts" : [ "GRE23" ],
    "tech_contacts" : [ "GRE23" ],
    "abuse_contacts" : [ "GRE23" ],
    "date_created" : "2017-05-12",
    "date_updated" : "2021-02-05",
    "source" : "lacnic"
  } ],
  "organization" : {
    "handle" : "26.578.190/0001-12",
    "name" : "TWF NET PROVEDOR DE INTERNET LTDA",
    "country" : [ "BR" ],
    "abuse_contacts" : [ "GRE23" ],
    "date_created" : "2017-05-12",
    "date_updated" : "2021-02-05",
    "source" : "lacnic"
  },
  "administrative_contacts" : [ {
    "handle" : "GRE23",
    "country" : "BR",
    "email" : [ "contato@twf.net.br" ],
    "date_created" : "2003-12-20",
    "date_updated" : "2026-04-01",
    "source" : "lacnic"
  } ],
  "technical_contacts" : [ {
    "handle" : "GRE23",
    "country" : "BR",
    "email" : [ "contato@twf.net.br" ],
    "date_created" : "2003-12-20",
    "date_updated" : "2026-04-01",
    "source" : "lacnic"
  } ],
  "abuse_contacts" : [ {
    "handle" : "GRE23",
    "country" : "BR",
    "email" : [ "contato@twf.net.br" ],
    "date_created" : "2003-12-20",
    "date_updated" : "2026-04-01",
    "source" : "lacnic"
  } ]
}

Peers

AS Number	Description	Country
AS199081	Lancom Ltd.	GR
AS6939	Hurricane Electric LLC	US
AS60602	Inovare-Prim SRL	MD
AS266142	Bahiadados Telecom Ltda.	BR
AS14537	Continent 8 LLC	US
AS267256	ONETIS TECNOLOGIA LTDA	BR
AS269416	SEMEAR TELECOM EIRELI	BR
AS271253	LINK BRASIL TELECOMUNICACOES LTDA	BR
AS270052	STARTELECOM S.A.	PY
AS262588	EXPLORERNET INFOLINK TECNOLOGIA E TELECOMUNICACOES	BR
AS266400	Ferenz Networks	BR
AS22548	Núcleo de Inf. e Coord. do Ponto BR NIC.BR	BR
AS1000	LINK AMERICAN	US
AS51185	MainStreaming SpA	IT
AS263661	BRASIL DIGITAL SERVIÇOS DE INFORMATICA E COMERCIO	BR
AS60503	FNX Tecnologia LTDA	BR
AS53062	GGNET TELECOMUNICACOES LTDA	BR
AS206735	Novelcomm LP	GR
AS16552	Tiggee LLC	US
AS270353	Tyna Host - Datacenter no Brasil	BR
AS268138	Thiago aparecido scaramuzza santana	BR
AS270888	V8 Telecom LTDA	BR
AS14840	BR.Digital Telecom	BR
AS263237	PowerHost Telecom SPA	CL
AS61573	IP TELECOM	BR
AS61680	ACESSO SIMPLES LTDA	BR
AS32590	Valve Corporation	US
AS57463	NetIX Communications JSC	BG
AS61624	INFNOC TECNOLOGIA LTDA	BR
AS12735	TurkNet Iletisim Hizmetleri A.S.	TR
AS28624	PROVEDORA CMA INTERNET LTDA	BR
AS268708	WANFIBX & INETKX INTERNET LTDA	BR
AS8801	Rocket Fibre Ltd	GB
AS263321	ILOGNET PROVEDOR	BR
AS1031	PEER 1031 LLC	US
AS213622	Falcon FZE LLC	AE
AS262427	Invista Net Provedor de Acesso Ltda	BR
AS999	CORIX NETWORKS	US
AS262355	VSX Networks	BR
AS61622	VIA MS SOLUCOES DIGITAIS	BR
AS264479	Turbozone Internet	BR
AS266519	PROVERADIO TELECOM	BR
AS267613	ELETRONET S.A.	BR
AS263541	IMF NETWORK DATA LTDA - ME	BR
AS61832	DB3 SERVICOS DE TELECOMUNICACOES S.A	BR
AS29049	Delta Telecom Ltd	AZ
AS24482	SG.GS	SG
AS28260	ALTA REDE CORPORATE NETWORK TELECOM LTDA - EPP	BR
AS263152	MIGO TELECOM	BR
AS274676	MULTIWAY COMERCIO E REPRESENTACOES LTDA	BR
AS28634	Life Tecnologia Ltda.	BR
AS52873	Softdados Telecomunicações	BR
AS269641	RURALNET BRASIL	BR
AS36236	NetActuate, Inc	US
AS23106	AMERICAN TOWER DO BRASIL-COMUNICAÇÂO MULTIMÍDIA LT	BR
AS269096	N&K TECNOLOGIA LTDA	BR
AS268976	Weclix Telecom S/A	BR
AS269115	TELECOM PROVEDORES E REDES DE COMUNICAÇÃO	BR
AS53202	Acesso10 Telecom	BR
AS39120	Convergenze S.p.A.	IT

Upstreams

AS Number	Description	Country
AS53062	GGNET TELECOMUNICACOES LTDA	BR
AS14840	BR.Digital Telecom	BR
AS6939	Hurricane Electric LLC	US
AS6057	Administracion Nacional de Telecomunicaciones	UY

ASN Lookup Tool

ASN Summary

AS266546 – TWF NET PROVEDOR DE INTERNET LTDA

ASN Intelligence API for production workflows

IP Ranges

Raw Whois Response

Parsed Whois Response

Peers

Upstreams

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

Frequently Asked Questions