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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
	45.163.24.0/23	BERTASSO E CIA LTDA
	45.163.24.0/22	BERTASSO E CIA LTDA
	45.163.26.0/23	BERTASSO E CIA LTDA
	138.36.44.0/23	BERTASSO E CIA LTDA
	138.36.44.0/22	BERTASSO E CIA LTDA
	138.36.46.0/23	BERTASSO E CIA LTDA
	138.255.48.0/22	BERTASSO E CIA LTDA
	138.255.48.0/24	BERTASSO E CIA LTDA
	138.255.49.0/24	BERTASSO E CIA LTDA
	138.255.50.0/24	BERTASSO E CIA LTDA
	138.255.51.0/24	BERTASSO E CIA LTDA
	2804:21a0::/33	BERTASSO E CIA LTDA
	2804:21a0::/34	BERTASSO E CIA LTDA
	2804:21a0:4000::/34	BERTASSO E CIA LTDA
	2804:21a0:8000::/34	BERTASSO E CIA LTDA
	2804:21a0:8000::/33	BERTASSO E CIA LTDA
	2804:21a0:c000::/34	BERTASSO E CIA LTDA

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS4230	Claro (Embratel)	✔	✔
	AS37468	Angola Cables	✔	✔
	AS263537	Via Fibra Internet Banda Larga EIRELI	✔	✔
	AS262761	Sinal Br Telecom Ltda	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS4230	Claro (Embratel)	✔	✔
	AS37468	Angola Cables	✔	✔
	AS263537	Via Fibra Internet Banda Larga EIRELI	✔	✔
	AS273726	DUNET TELECOM LTDA	✔	✔
	AS267295	PROVEDOR MIRASSOL LTDA - ME	✔	✔
	AS269521	DUNETISP INTERNET LTDA	✔	✔
	AS262761	Sinal Br Telecom Ltda	✔	✔
	AS275678	Hard Tech Telecomunicacoes LTDA	✘	✔
	AS7195	EdgeUno	✔	✘
	AS14840	BR.DIGITAL	✔	✔
	AS1916	RNP - Rede Nacional de Ensino e Pesquisa	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS61745	NBS Telecom	✔	✘
	AS263661	Brasil Digital Telecom	✔	✘
	AS267078	CUIABA FIBRA INTERNET EIRELI	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS273726	DUNET TELECOM LTDA	✔	✔
	AS269521	DUNETISP INTERNET LTDA	✔	✔
	AS267295	PROVEDOR MIRASSOL LTDA - ME	✔	✔
	AS275678	Hard Tech Telecomunicacoes LTDA	✘	✔

% 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.
% 2026-01-28T11:58:26-03:00 - 2a0c:2f07:9459:2c13::247

aut-num:     AS264565
owner:       BERTASSO E CIA LTDA
ownerid:     05.072.224/0001-22
responsible: FABIANA PERPETUA BERTASSO FRANCO
country:     BR
owner-c:     FPBFR5
routing-c:   ROFRA192
abuse-c:     ROFRA192
created:     20150114
changed:     20150114
inetnum:     138.36.44.0/22
inetnum:     2804:21a0::/32
inetnum:     138.255.48.0/22
inetnum:     45.163.24.0/22

nic-hdl-br:  FPBFR5
person:      FABIANA PERPETUA BERTASSO FRANCO
# Email removed, Log into bgp.tools to see whois emails/phone numbers
country:     BR
created:     20230302
changed:     20260102

nic-hdl-br:  ROFRA192
person:      Rodrigo Franco
# Email removed, Log into bgp.tools to see whois emails/phone numbers
country:     BR
created:     20130311
changed:     20230302

% 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: 2026-01-28T14:58:26Z UTC

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Member of the following AS-SETs

-	Member
RADB	as-linkar
RADB	as-ctbc-tools-2
RADB	as-durand1-customer
RADB	as-53427-tgn
RADB	as262761:as-customers
ALTDB	as-action
ALTDB	as-266214
RADB	as-8167_customers
RADB	as-maxihost
RADB	as-ctbc-customers50
RADB	as-allrede-customers3
RADB	as-mob-customer-as53237
RADB	as53013:as-cone
RADB	as-fortel-customers
RADB	as-ctbc-customers86
RADB	as-mob-customer-as265187
ALTDB	as53245:as-customers
RADB	as-tascom-customers
RADB	as-267613
RADB	as-stormwall-set
BBOI	as-ascenty
RADB	as-hurricanev6
RADB	as-embratelnet
RADB	as-7738_customers
RADB	as-taipan-cpoc-3
RIPE	as-stormwall-set
RADB	as-53427-tglobal
RADB	as-8167-bgp-customers
RADB	as-7738-bgp-customers
RADB	as52925:as-cone
RADB	as-openx-customers
RADB	as-samm
RADB	as-ufinet-latam-brasil
ALTDB	as-266583