ASN Lookup Tool

PRONTO FIBRA LTDA BR BR 29 Routes

AS Data

AS266356

AS266356 – PRONTO FIBRA LTDA

AS Number 266356
AS Name
Organization PRONTO FIBRA LTDA()
Country BR
Number of IPv4 Routes 27
Number of IPv6 Routes 2
ASN type ISP
Registry lacnic
Date Allocated 2016-11-10

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Use ASN data for AS266356 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
187.121.224.0/23 512
187.121.228.0/22 1024
170.239.224.0/22 1024
187.121.228.0/23 512
187.121.225.0/24 256
2804:3690::/33 ~40×10²⁷
45.234.139.0/24 256
187.121.229.0/24 256
45.234.138.0/23 512
187.121.224.0/21 2048

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.
% 2026-03-16T09:13:50-03:00 - 134.199.69.31

aut-num:     AS266356
owner:       PRONTO FIBRA LTDA
responsible: Helio Ferraz da Silva
owner-c:     HEFSL2
routing-c:   HEFSL2
abuse-c:     PRFIB
created:     20161110
changed:     20190703
inetnum:     170.239.224.0/22
inetnum:     2804:3690::/32
inetnum:     45.234.136.0/22
inetnum:     187.121.224.0/21

nic-hdl-br:  HEFSL2
person:      HELIO FERRAZ DA SLVA
created:     20160507
changed:     20240712

nic-hdl-br:  PRFIB
person:      Pronto Fibra
created:     20170807
changed:     20190703

% 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
AS271253 LINK BRASIL TELECOMUNICACOES LTDA BR
AS262462 Aranet Play BR
AS267613 ELETRONET S.A. BR
AS8167 V tal BR

Upstreams

AS Number Description Country
AS267613 ELETRONET S.A. BR
AS8167 V tal BR

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Frequently Asked Questions

ASN AS266356 is an Autonomous System Number used to identify a network for BGP internet routing.
AS266356 is listed under PRONTO FIBRA LTDA.
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.