ASN Lookup Tool

CNT Fiber BR BR 38 Routes

AS Data

AS263356

AS263356 – CNT Fiber

AS Number 263356
AS Name
Organization CNT Fiber
Country BR
Number of IPv4 Routes 15
Number of IPv6 Routes 23
ASN type ISP
Registry lacnic
Date Allocated 2014-03-18

ASN Intelligence API for production workflows

Use ASN data for AS263356 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
2804:14e0:f000::/36 ~5×10²⁷
191.37.78.0/24 256
191.37.72.0/22 1024
2804:14e0:8000::/33 ~40×10²⁷
2804:14e0:5000::/36 ~5×10²⁷
191.37.73.0/24 256
2804:14e0:8000::/34 ~20×10²⁷
2804:14e0:6000::/36 ~5×10²⁷
2804:14e0:e000::/36 ~5×10²⁷
191.37.72.0/23 512

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.
% 2026-04-10T09:23:14-03:00 - 134.199.88.115

aut-num:     AS263356
owner:       CNT Fiber
responsible: Amarildo Souza Arruda
owner-c:     AMSAR103
routing-c:   CNILT14
abuse-c:     CNILT14
created:     20140318
changed:     20140318
inetnum:     191.37.72.0/21
inetnum:     2804:14e0::/32

nic-hdl-br:  AMSAR103
person:      Amarildo de Souza Arruda
created:     20241125
changed:     20241126

nic-hdl-br:  CNILT14
person:      Conecta Net Informatica Ltda
created:     20111006
changed:     20260317

% 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
AS23106 AMERICAN TOWER DO BRASIL-COMUNICAÇÂO MULTIMÍDIA LT BR
AS23106 AMERICAN TOWER DO BRASIL COMUNICAÇÃO MULTIMÍDIA LT BR
AS21574 Century Telecom Ltda BR

Upstreams

AS Number Description Country
AS23106 AMERICAN TOWER DO BRASIL COMUNICAÇÃO MULTIMÍDIA LT BR
AS21574 Century Telecom Ltda BR

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Frequently Asked Questions

ASN AS263356 is an Autonomous System Number used to identify a network for BGP internet routing.
AS263356 is listed under CNT Fiber.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.