ASN Lookup Tool

Century Telecom Ltda century.net.br BR BR 7 Routes

AS Data

AS21574

AS21574 – Century Telecom Ltda

AS Number 21574
AS Name Century Telecom Ltda
Organization Century Telecom Ltda
Country BR
Website century.net.br
Number of IPv4 Routes 6
Number of IPv6 Routes 1
ASN type ISP
Registry lacnic
Date Allocated 2001-06-07

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Use ASN data for AS21574 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
187.1.178.0/24 256
200.169.0.0/20 4096
186.249.224.0/20 4096
187.1.176.0/24 256
187.1.176.0/20 4096
2804:23ec::/32 ~79×10²⁷
168.227.200.0/22 1024

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.
% 2026-09-30T09:36:35-03:00 - 161.0.30.224

aut-num:     AS21574
owner:       Century Telecom Ltda
responsible: Fernando Antonio Barbosa
owner-c:     DCT38
routing-c:   DCT38
abuse-c:     ACTLT99
created:     20010607
changed:     20200610
inetnum:     200.169.0.0/20
inetnum:     187.1.176.0/20
inetnum:     186.249.224.0/20
inetnum:     2804:23ec::/32
inetnum:     168.227.200.0/22
as-in:       from AS262306 300 accept AS262306
as-in:       from AS264552 300 accept AS264552
as-in:       from AS262805 300 accept AS262805
as-in:       from AS262566 300 accept AS262566
as-in:       from AS52596 300 accept AS52596
as-in:       from AS263632 300 accept AS263632
as-in:       from AS264421 300 accept AS264421
as-in:       from AS264228 300 accept AS264228
as-in:       from AS262525 300 accept AS262525
as-in:       from AS52809 300 accept AS52809
as-in:       from AS61707 300 accept AS61707
as-in:       from AS52883 300 accept AS52883
as-in:       from AS264540 300 accept AS264540
as-in:       from AS262624 300 accept AS262624
as-in:       from AS52947 300 accept AS52947
as-in:       from AS263453 300 accept AS263453
as-in:       from AS262961 300 accept AS262961
as-in:       from AS263666 300 accept AS263666
as-in:       from AS265185 300 accept AS265185
as-in:       from AS52758 300 accept AS52758
as-in:       from AS264325 300 accept AS264325
as-in:       from AS262336 300 accept AS262336
as-in:       from AS262602 300 accept AS262602
as-in:       from AS263432 300 accept AS263432
as-in:       from AS52596 300 accept AS52596
as-out:      to AS3549 announce AS21574
as-out:      to AS16735 announce AS21574
as-out:      to AS262589 announce AS21574
as-out:      to AS28360 announce AS21574

nic-hdl-br:  DCT38
person:      Dominios Corporativos Century Telecom
created:     20040624
changed:     20181206

nic-hdl-br:  ACTLT99
person:      Abuse Century Telecom Ltda
created:     20200610
changed:     20200610

% 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
AS58057 Securebit AG CH
AS51907 Kanton Zug CH
AS38880 Micron21 Datacentre Pty Ltd AU
AS263475 Guara Digital LTDA BR
AS198150 SIACOM JSC GE
AS269416 SEMEAR TELECOM EIRELI BR
AS60144 3W Infra B.V. NL
AS14773 Lancaster Lebanon Intermediate Unit 13 US
AS263356 CNT Fiber BR
AS3303 Swisscom Schweiz AG CH
AS22548 Núcleo de Inf. e Coord. do Ponto BR NIC.BR BR
AS1000 LINK AMERICAN US
AS60503 FNX Tecnologia LTDA BR
AS268843 CDNTV TECNOLOGIA LTDA BR
AS206735 Novelcomm LP GR
AS13237 euNetworks GmbH DE
AS271398 FACILITUDE SERVICOS DE COMUNICAO LTDA BR
AS32590 Valve Corporation US
AS7768 TEKNET VERI MERKEZI HIZMETLERI A.S. TR
AS265183 Mundo Telecomunicações e Informática Ltda BR
AS12735 TurkNet Iletisim Hizmetleri A.S. TR
AS559 SWITCH CH
AS8758 Iway AG CH
AS268888 ACRF SERVICOS DE INFORMATICA LTDA ME BR
AS263321 ILOGNET PROVEDOR BR
AS29838 Atlantic Metro Communications II, Inc. US
AS262427 Invista Net Provedor de Acesso Ltda BR
AS1828 Unitas Global US
AS999 CORIX NETWORKS US
AS264479 Turbozone Internet BR
AS269311 DNET BRASIL LTDA BR
AS269484 START TELECOM BR
AS262985 Global Networks Telecomunicacoes Informatica Ltda BR
AS269211 MUND NET TELECOMUNICAÇÕES LTDA ME BR
AS270374 KINGNET TELECOMUNICACOES BR
AS12741 Netia SA PL
AS63927 RISE ASIA TECHNOLOGY LIMITED PH
AS11432 Telium Telecomunicações Ltda BR
AS209823 Enki Multimedia EURL FR
AS14630 Invesco Group Services, Inc. US
AS270438 G L C PINTO BR
AS268433 MGCLOUD SOLUCOES EM TIC LTDA ME BR
AS37100 SEACOM Limited MU
AS199938 Netzwerge GmbH DE
AS24940 Hetzner Online GmbH DE
AS269115 TELECOM PROVEDORES E REDES DE COMUNICAÇÃO BR
AS52925 Ascenty Data Centers e Telecomunicações S/A BR
AS267978 JOTA NET TELECOMUNICACOES LTDA ME BR
AS43440 Digitale Suisse AG CH
AS18403 FPT Telecom Company VN
AS265437 INTERNET CORPORATE & SOLAR LTDA BR
AS52075 Wifirst S.A.S. FR
AS263444 Open X Tecnologia Ltda BR
AS262979 LINE TELECOM LTDA BR
AS268584 ACESSE FIBRA LTDA BR
AS35710 weber.digital GmbH DE
AS41327 Fiber Telecom S.p.A. IT
AS62255 BiMajLink d.o.o. SI
AS29691 Nine Internet Solutions AG CH
AS272454 RNJ TELECOM LTDA BR

Upstreams

AS Number Description Country
AS7195 EDGEUNO S.A.S CO
AS9498 Bharti Airtel Limited IN
AS20326 TeraSwitch Networks Inc. US
AS64049 Reliance Jio Infocomm Pte Ltd Singapore SG
AS39249 Netassist International EOOD BG
AS39351 31173 Services AB SE
AS6204 ZET.NET IP Transit RO
AS6939 Hurricane Electric LLC US
AS8966 EMIRATES TELECOMMUNICATIONS GROUP COMPANY ETISALAT GROUP PJSC AE
AS22356 Durand do Brasil Ltda BR
AS17557 Pakistan Telecommunication Company Limited PK
AS37468 Angola Cables AO
AS20764 CJSC RASCOM RU
AS15802 Emirates Integrated Telecommunications Company PJSC AE
AS3303 Swisscom Schweiz AG CH
AS47147 ANEXIA Internetdienstleistungs GmbH AT
AS24889 Monzoon Networks AG CH
AS12859 BIT BV NL
AS14840 BR.Digital Telecom BR
AS29632 Netassist International EOOD BG
AS24961 WIIT AG DE
AS8758 Iway AG CH
AS12779 IT.Gate S.p.A. IT
AS35625 Eurofiber France SAS FR
AS1836 green.ch AG CH
AS212024 Marc Schmitt FR
AS1031 PEER 1031 LLC US
AS44066 firstcolo GmbH DE
AS30844 Liquid Telecommunications Ltd GB
AS20485 Joint Stock Company TransTeleCom RU
AS267613 ELETRONET S.A. BR
AS34549 meerfarbig GmbH & Co. KG DE
AS28716 Retelit Digital Services S.p.A. IT
AS34927 iFog GmbH CH
AS1764 Next Layer Telekommunikationsdienstleistungs und Beratungs GmbH AT
AS25091 IP Max SA CH
AS6695 DE CIX Management GmbH DE
AS31027 GlobalConnect A/S DK
AS48362 Stadtwerke Feldkirch AT
AS8298 IPng Networks GmbH CH
AS7713 Telekomunikasi Indonesia PT ID
AS6663 Euroweb Romania S.R.L. RO
AS33891 Core Backbone GmbH DE
AS34177 Celeste SAS FR
AS205103 Telegraph42 Management GmbH DE
AS61568 ALOO TELECOM FSF TECNOLOGIA SA BR
AS34019 Hivane Association FR
AS60171 AFR IX TELECOM S.A. ES
AS8218 operated Upstreamnet gmbh FR
AS15958 CETIN Ltd. Belgrade RS
AS37100 SEACOM Limited MU
AS60068 Datacamp Limited GB
AS52925 Ascenty Data Centers e Telecomunicações S/A BR
AS39120 Convergenze S.p.A. IT
AS15830 Equinix EMEA Acquisition Enterprises B.V. NL
AS263444 Open X Tecnologia Ltda BR
AS29075 IELO LIAZO SERVICES SAS FR
AS264455 STAR MAN NET PROVEDORA DE INTERNET LTDA EPP BR
AS6057 Administracion Nacional de Telecomunicaciones UY
AS5405 Inter.link GmbH DE

Downstreams

AS Number Description Country
AS61673 BR7 TELECOM BR
AS267986 M & R NETWORK LTDA ME BR
AS274795 Verteron Datacenter LTDA BR
AS266169 BIXNET SERVICOS DE REDES DE COMUNICACAO VIRTUAL BR
AS263475 Guara Digital LTDA BR
AS268327 K@NET PROVEDOR DE INTERNET BR
AS263356 CNT Fiber BR
AS263526 NEW TECNOLOGIA DA INFORMACAO LTDA BR
AS268843 CDNTV TECNOLOGIA LTDA BR
AS262587 CST Cerentini Soluções em Tecnologia BR

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Frequently Asked Questions

ASN AS21574 is an Autonomous System Number used to identify a network for BGP internet routing.
AS21574 is listed under Century Telecom 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.