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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
	45.6.164.0/23	CMC TELECOM EIRELI - ME
	45.6.164.0/22	CMC TELECOM EIRELI - ME
	45.6.166.0/23	CMC TELECOM EIRELI - ME
	2804:3b4c::/34	CMC TELECOM EIRELI - ME
	2804:3b4c::/33	CMC TELECOM EIRELI - ME
	2804:3b4c::/32	CMC TELECOM EIRELI - ME
	2804:3b4c::/35	CMC TELECOM EIRELI - ME
	2804:3b4c:2000::/35	CMC TELECOM EIRELI - ME
	2804:3b4c:4000::/35	CMC TELECOM EIRELI - ME
	2804:3b4c:4000::/34	CMC TELECOM EIRELI - ME
	2804:3b4c:6000::/35	CMC TELECOM EIRELI - ME
	2804:3b4c:8000::/34	CMC TELECOM EIRELI - ME
	2804:3b4c:8000::/35	CMC TELECOM EIRELI - ME
	2804:3b4c:8000::/33	CMC TELECOM EIRELI - ME
	2804:3b4c:a000::/35	CMC TELECOM EIRELI - ME
	2804:3b4c:c000::/35	CMC TELECOM EIRELI - ME
	2804:3b4c:e000::/35	CMC TELECOM EIRELI - ME

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS28580	FASTERNET	✔	✔
	AS262643	BRC TELECOMUNICACOES EIRELI	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS6939	Hurricane Electric LLC	✔	✔
	AS28580	FASTERNET	✔	✔
	AS35280	F5 Networks SARL	✘	✔
	AS262643	BRC TELECOMUNICACOES EIRELI	✔	✔
	AS7195	EdgeUno	✘	✔
	AS6424	EDGOO NETWORKS	✔	✔
	AS14840	BR.DIGITAL	✘	✔
	AS2635	Automattic, Inc	✔	✔
	AS214331	Teske Virtual System Ltda	✔	✔
	AS13335	Cloudflare, Inc.	✔	✔
	AS269180	VIPNET Conexão	✔	✔
	AS40776	TaoNet	✔	✔
	AS52999	START TELECOM LTDA	✔	✔
	AS214757	Jakub Krsa	✘	✔
	AS263661	Brasil Digital Telecom	✔	✔
	AS61624	ISPSHIELD (InfNOC Tecnologia)	✔	✔
	AS270684	WEB KONECT TELECOM DE FRUTAL LTDA	✔	✔
	AS60503	FNX Tecnologia LTDA	✔	✔
	AS262462	Aranet Play	✔	✔
	AS14907	Wikimedia Foundation Inc.	✔	✔
	AS52888	UNIVERSIDADE FEDERAL DE SAO CARLOS	✔	✔
	AS36236	NetActuate, Inc	✔	✔
	AS266400	Ferenz Networks	✔	✔
	AS263903	INFORBARRA TELECOM	✔	✔
	AS274676	MULTIWAY COMERCIO E REPRESENTACOES LTDA	✔	✔
	AS20473	The Constant Company, LLC	✔	✔
	AS1251	FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO SÃO PAULO	✔	✔
	AS262832	Link Cariri	✔	✔
	AS215248	Bastiaan Mathijs Brink	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS1916	RNP - Rede Nacional de Ensino e Pesquisa	✔	✔
	AS42473	Anexia Cloud Solutions GmbH	✔	✔
	AS28283	Adyl Telecom	✔	✔
	AS262589	SAMM	✔	✔
	AS263237	PowerHost Telecom SPA	✘	✔
	AS262287	Latitude.sh LTDA	✘	✔
	AS270470	LN TELECOM	✘	✔
	AS269396	UNIR TELECOM	✘	✔
	AS49544	i3D.net B.V	✘	✔
	AS262880	RADAR WISP LTDA	✔	✘
	AS265061	GC NET	✔	✘
	AS52872	VOANET Telecomunicações Ltda.	✔	✘
	AS53062	ALT | GRUPO BRASIL TECPAR	✔	✘
	AS270735	COMPUTIZE NETWORK TELECOMUNICACOES LTDA	✔	✘
	AS264409	Huge Networks	✔	✘
	AS24482	SG.GS	✔	✘
	AS267469	W8 Telecom Ltda - ME	✔	✘

% IP Client: 2a0c:2f07:4896:666:0:0:0:247
 
% Copyright (c) Nic.br
%  The use of the data below is only permitted as described in
%  full by the Use and Privacy Policy at https://registro.br/upp ,
%  being prohibited its distribution, commercialization or
%  reproduction, in particular, to use it for advertising or
%  any similar purpose.
%  2023-09-18T00:39:00-03:00 - IP: 2a0c:2f07:4896:666:0:0:0:247

aut-num:     AS266140
owner:       CMC TELECOM EIRELI - ME
ownerid:     25.316.717/0001-78
responsible: Cesar Miguel Canavezzi
country:     BR
owner-c:     CTEME9
routing-c:   CTEME9
abuse-c:     CTEME9
created:     20170407
changed:     20170407
inetnum:     45.6.164.0/22
inetnum:     2804:3b4c::/32

nic-hdl-br:  CTEME9
person:      CMC Telecom EIRELI - ME
# Email removed, Log into bgp.tools to see whois emails
country:     BR
created:     20170221
changed:     20221003

% Security and mail abuse issues should also be addressed to
% cert.br, http://www.cert.br/ , respectivelly to cert@cert.br
% and mail-abuse@cert.br
%
% whois.registro.br accepts only direct match queries. Types
% of queries are: domain (.br), registrant (tax ID), ticket,
% provider, CIDR block, IP and ASN.

Last Update: 2025-10-29T02:23:14Z UTC / (Click here to force a refresh)

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-set-cmctelecom	1
RADB	as-266140	1
RADB	as53013:as-cone	9272
RADB	as-ctbc-customers136	45
RADB	as-durand1-customer	4585
RADB	as-ufinet-latam-brasil	4935
RADB	as26615:as-customers	7516
RADB	as-customers-cmc	1
RADB	as28649:as-28580	8
RADB	as-ctbc-customers183	51
RADB	as3491:as-customers-na	60740
RADB	as-ctbc-tools	9638
ALTDB	as-hwng-downstreams	2598
RADB	as-ctbc-customers56	65