What is ASN AS266475?

ASN AS266475 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS266475?

AS266475 is listed under SEM FRONTEIRAS TELECOMUNICACOES 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.

AS266475 SEM FRONTEIRAS TELECOMUNICACOES LTDA

ASN Lookup Tool

SEM FRONTEIRAS TELECOMUNICACOES LTDA

BR 38 Routes

AS Data

AS266475

AS266475 – SEM FRONTEIRAS TELECOMUNICACOES LTDA

AS Number	266475
AS Name
Organization	SEM FRONTEIRAS TELECOMUNICACOES LTDA()
Country	BR
Number of IPv4 Routes	24
Number of IPv6 Routes	14
ASN type	ISP
Registry	lacnic
Date Allocated	2017-01-10

ASN Intelligence API for production workflows

Use ASN data for AS266475 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
170.83.172.0/22	AS266475	SEM FRONTEIRAS TELECOMUNICACOES LTDA	SEM FRONTEIRAS TELECOMUNICACOES LTDA	1024
38.9.112.0/22	AS266475	SEM FRONTEIRAS TELECOMUNICACOES LTDA	Sem Fronteiras Telecomunicações LTDA	1024
38.191.56.0/23	AS266475	SEM FRONTEIRAS TELECOMUNICACOES LTDA	Sem Fronteiras Telecomunicações LTDA	512
38.191.48.0/23	AS266475	SEM FRONTEIRAS TELECOMUNICACOES LTDA	Sem Fronteiras Telecomunicações LTDA	512
38.9.113.0/24	AS266475	SEM FRONTEIRAS TELECOMUNICACOES LTDA	Sem Fronteiras Telecomunicações LTDA	256
170.83.173.0/24	AS266475	SEM FRONTEIRAS TELECOMUNICACOES LTDA	SEM FRONTEIRAS TELECOMUNICACOES LTDA	256
2804:3868::/34	AS266475	SEM FRONTEIRAS TELECOMUNICACOES LTDA	SEM FRONTEIRAS TELECOMUNICACOES LTDA	~20×10²⁷
38.191.52.0/23	AS266475	SEM FRONTEIRAS TELECOMUNICACOES LTDA	Sem Fronteiras Telecomunicações LTDA	512
38.56.72.0/22	AS266475	SEM FRONTEIRAS TELECOMUNICACOES LTDA	Sem Fronteiras Telecomunicações LTDA	1024
38.56.73.0/24	AS266475	SEM FRONTEIRAS TELECOMUNICACOES LTDA	Sem Fronteiras Telecomunicações LTDA	256

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.
% 2026-03-21T09:24:48-03:00 - 93.114.13.142

aut-num:     AS266475
owner:       SEM FRONTEIRAS TELECOMUNICACOES LTDA
responsible: Makleysh de Oliveira Bezerra
owner-c:     MAOBE101
routing-c:   KEBSO29
abuse-c:     MAOLI1589
created:     20170110
changed:     20251119
inetnum:     170.83.172.0/22
inetnum:     2804:3868::/32
as-in:       from AS4230 100 accept ANY
as-in:       from AS262253 100 accept ANY
as-in:       from AS271253 100 accept ANY
as-in:       from AS264275 100 accept ANY
as-out:      to AS4230 announce AS266475
as-out:      to AS262253 announce AS266475
as-out:      to AS271253 announce AS266475
as-out:      to AS264275 announce AS266475

nic-hdl-br:  MAOBE101
person:      Makleysh de Oliveira Bezerra
created:     20230704
changed:     20250207

nic-hdl-br:  KEBSO29
person:      K�mio Benevides de Souza
created:     20250211
changed:     20250211

nic-hdl-br:  MAOLI1589
person:      Makleysh Oliveira
created:     20160128
changed:     20220706

% 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
AS264275	ROLIM NET TECNOLOGIA 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
AS263283	JGNET - J G DE OLIVEIRA MATOS & CIA LTDA	BR

Upstreams

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS264275	ROLIM NET TECNOLOGIA LTDA	BR
AS271253	LINK BRASIL TELECOMUNICACOES LTDA	BR
AS14840	BR.Digital Telecom	BR
AS1031	PEER 1031 LLC	US
AS263237	PowerHost Telecom SPA	CL
AS6939	Hurricane Electric LLC	US
AS6057	Administracion Nacional de Telecomunicaciones	UY
AS52468	UFINET PANAMA S.A.	PA
AS53013	UFINET BRASIL S.A.	BR

Downstreams

AS Number	Description	Country
AS267997	DS TELECOM	BR
AS52766	Printnet telecomunica�oes	BR
AS267432	D. S. da Costa	BR
AS271555	SDMNET INFORMATICA LTDA ME	BR