AS4230 — CLARO S.A.

Network type: residential

AS4230 announces 43 IPv4 prefixes covering 5,155,584 addresses and 6 IPv6 prefixes.

About this network

Autonomous System 4230 is operated by Claro S.A., the Brazilian arm of América Móvil, and carries the network that was built as Embratel, Brazil's long-standing long-distance and backbone carrier.

What it's used for

• Fixed broadband and business connectivity for millions of subscribers in Brazil.
• IP transit and backbone routing for downstream networks, making this one of the larger carrier networks in South America.

Notable

• Very large eyeball and carrier network: it originates several million IPv4 addresses, concentrated in the Brazilian 187.x, 189.x, 200.x, and 201.x ranges, and peers at Brazilian and international exchanges.
• A mixed network. Much of the space is residential, but a meaningful share is business access and transit, so an IP here is not automatically a home user.

Interesting

• Embratel was Brazil's state telecom monopoly before privatisation. The name survives in the network's registration long after the Claro rebrand.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 179.68.0.0/16
• 179.237.0.0/20
• 179.237.16.0/21
• 179.237.24.0/23
• 186.249.160.0/20
• 187.28.0.0/15
• 187.30.0.0/16
• 187.43.0.0/16
• 189.2.0.0/15
• 189.16.0.0/15
• 189.22.0.0/15
• 189.42.0.0/15
• 189.52.0.0/15
• 189.86.0.0/15
• 189.88.0.0/16
• 191.38.0.0/15
• 191.56.0.0/13
• 200.10.159.0/24
• 200.139.192.0/18
• 200.166.0.0/15
• 200.172.0.0/15
• 200.174.0.0/16
• 200.178.0.0/15
• 200.182.0.0/15
• 200.190.0.0/15
• 200.192.0.0/18
• 200.208.0.0/14
• 200.212.0.0/15
• 200.214.0.0/16
• 200.227.0.0/16
• 200.228.0.0/16
• 200.230.0.0/15
• 200.241.0.0/16
• 200.242.0.0/15
• 200.244.0.0/14
• 200.248.0.0/13
• 201.30.0.0/15
• 201.38.0.0/15
• 201.44.0.0/15
• 201.56.0.0/15
• 201.64.0.0/15
• 201.72.0.0/15
• 201.90.0.0/16
• 2600:1419:19::/48
• 2600:1419:4c00::/48
• 2600:1419:5c00::/48
• 2600:1419:8000::/48
• 2804:a8::/32
• 2804:1388::/30

Upstream networks

• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS9002 RETN Limited
• AS3257 GTT Communications Inc.
• AS6453 TATA COMMUNICATIONS (AMERICA) INC
• AS22652 Videotron Ltee
• AS701 Verizon Business
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS24482 SG.GS
• AS48185 team.blue NV
• AS1836 green.ch AG
• AS48362 Stadtwerke Feldkirch
• AS50673 Serverius Holding B.V.
• AS212024 Marc Schmitt
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS14907 Wikimedia Foundation Inc.
• AS50300 CustodianDC Limited
• AS1031 PEER 1031 LLC
• AS37721 Virtual Technologies & Solutions
• AS20485 Joint Stock Company TransTeleCom
• AS56655 Gigahost AS
• AS20766 Association "Gitoyen"

Downstream networks

• AS28573 Claro NXT Telecomunicacoes Ltda
• AS27652 Claro S/A
• AS54253 Oracle Corporation
• AS264984 CLICKIP PROVEDORES DE ACESSO LTDA
• AS52579 TELLIUS & ALLNET TELECOMUNICACOES DAS AMERICAS
• AS266475 SEM FRONTEIRAS TELECOMUNICACOES LTDA
• AS263452 Ativas Data Center S.A.
• AS52956 Speed Travel Comunicacao Multimidia Ltda - ME
• AS61884 OLLA COMUNICACAO LTDA
• AS262813 Superimagem Tecnologia em Eletronica Ltda
• AS28332 BOA VISTA SERVICOS S.A.
• AS28581 Banco Santander (Brasil) S.A.
• AS267242 AMAZONIA TELECOMUNICACOES LTDA
• AS263474 VerdeNET Fibra Optica
• AS28151 Datora Telecomunicacoes Ltda.
• AS28662 Sascar Tecnologia e Seguranca Automotiva S/A
• AS267396 Rv Connect telecomunicacoes Ltda - Me.
• AS28631 Banrisul - Banco do Estado do Rio Grande do Sul
• AS266583 TELXE DO BRASIL TELECOMUNICACOES LTDA
• AS28159 PRODERJ - Centro de Tecnologia da Informacao do RJ
• AS28291 MINISTERIO DA SAUDE
• AS266520 VOOB TELECOM
• AS270637 NetPurus Servicos de Telecomunicaces LTDA
• AS20116 CAIXA ECONOMICA FEDERAL
• AS16685 TIVIT TERCEIRIZACAO DE PROCESSOS, SERV. E TEC. S/A

Adjacent networks

• AS28573 Claro NXT Telecomunicacoes Ltda
• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS3257 GTT Communications Inc.
• AS34549 meerfarbig GmbH & Co. KG
• AS3356 Level 3 Parent, LLC
• AS1031 PEER 1031 LLC
• AS174 Cogent Communications, LLC
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS22652 Videotron Ltee
• AS9002 RETN Limited
• AS14907 Wikimedia Foundation Inc.
• AS52925 Ascenty Data Centers e Telecomunicacoes S/A
• AS266583 TELXE DO BRASIL TELECOMUNICACOES LTDA
• AS28283 Adylnet Telecom
• AS701 Verizon Business
• AS48362 Stadtwerke Feldkirch
• AS37468 Angola Cables
• AS1836 green.ch AG
• AS971 PureVoltage Hosting Inc.
• AS17639 Converge ICT Solutions Inc.
• AS34019 Hivane Association
• AS264984 CLICKIP PROVEDORES DE ACESSO LTDA
• AS212024 Marc Schmitt
• AS1103 SURF B.V.

Routing security

• RPKI: 78 valid, 3 invalid and 6 not-found announcements; 81 ROAs.
• ASPA: none published.
• IRR: 97% of announcements registered; 86 route objects.
• Listed in as-sets: AS-28513, AS-8167-PEERING-NATIONAL, AS-CTBC-CUSTOMERS65, AS-EMBRASNET, AS-EMBRATELNET, AS-GBLX, AS-MANDA-AMSIX-PEERS-V4, AS-MANDA-AMSIX-PEERS-V6, AS-SEABONECUSTLA, AS16921:AS-UPSTREAMS, AS199746:AS-BLACKLIST, AS204464:AS-BLACKLIST, AS262757:AS-UPSTREAMS, AS264409:AS-CONE, AS264849:AS-COOPDIONISIA, AS268471:AS-UPSTREAMS, AS269180:AS-TRANSIT, AS28215:AS-TRANSIT, AS3303:AS-SWCMPEERS, AS3491:AS-CUSTOMERS-NA, AS48793:AS-DECIX-MAD-CONNECTED, AS48793:AS-DECIX-MAD-RS, AS48793:AS-DECIX-MAD-RS-V6, AS62499:AS-DECIX-DFW-CONNECTED, AS62499:AS-DECIX-DFW-RS.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Equinix Internet Exchange Ashburn — Ashburn, United States
• DE-CIX New York — New York, United States
• DE-CIX Madrid — Madrid, Spain
• New York International Internet Exchange — New York, United States
• FL-IX - The Florida Internet Exchange / Community IX - Florida — Miami, United States
• Equinix Internet Exchange Miami — Miami, United States
• DE-CIX Dallas — Dallas, United States
• Digital Realty Atlanta Internet Exchange — Atlanta, United States
• Digital Realty New York Internet Exchange — New York, United States
• Equinix-LA(former Paix) — Los Angeles, United States