asn.dev

Observed topology

AS4230 CLARO S.A.

Residential ARIN NSP

Upstreams 35 carry this network
Downstreams 361 this network carries
Adjacent (IPv4) 400
Adjacent (IPv6) 213
Upstream graph Who carries AS4230, and who carries them, drawn as a map up to the transit-free core. 12 exchanges Where AS4230 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 35

Networks observed carrying traffic for AS4230: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv6730
AS6939Hurricane Electric LLCTransitIPv4 IPv6516
AS3356Level 3 Parent, LLCTransitIPv4390
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4329
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6246
AS9002RETN LimitedUnclassifiedIPv4 IPv6242
AS174Cogent Communications, LLCTransitIPv4228
AS22652Videotron LteeResidentialIPv4 IPv6168
AS3257GTT Communications Inc.TransitIPv4 IPv6162
AS701Verizon BusinessResidentialIPv4156

All 35 upstreams →

Transit

Downstream networks

All 361

Networks for which AS4230 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS28573Claro NXT Telecomunicacoes LtdaResidentialIPv4 IPv6134,080
AS264984CLICKIP PROVEDORES DE ACESSO LTDAResidentialIPv4 IPv61,643
AS27652Claro S/AUnclassifiedIPv41,450
AS54253Oracle CorporationUnclassifiedIPv4 IPv61,388
AS52579TELLIUS & ALLNET TELECOMUNICACOES DAS AMERICASHostingIPv4 IPv61,234
AS263452Ativas Data Center S.A.UnclassifiedIPv41,189
AS61884OLLA COMUNICACAO LTDAUnclassifiedIPv4 IPv61,168
AS52956Speed Travel Comunicacao Multimidia Ltda - MEResidentialIPv4 IPv61,161
AS28332BOA VISTA SERVICOS S.A.UnclassifiedIPv4986
AS28581Banco Santander (Brasil) S.A.UnclassifiedIPv4973

All 361 downstreams →

Adjacency

Adjacent networks

All 400

Every AS seen directly next to AS4230 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS28573Claro NXT Telecomunicacoes LtdaResidentialIPv4 IPv6135,536
AS1299Arelion Sweden ABTransitIPv4 IPv647,513
AS6939Hurricane Electric LLCTransitIPv4 IPv633,510
AS3356Level 3 Parent, LLCTransitIPv4 IPv621,090
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv618,882
AS1031PEER 1031 LLCUnclassifiedIPv417,995
AS3257GTT Communications Inc.TransitIPv4 IPv616,726
AS22652Videotron LteeResidentialIPv4 IPv611,914
AS174Cogent Communications, LLCTransitIPv4 IPv610,820
AS9002RETN LimitedUnclassifiedIPv4 IPv610,411

All 400 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-23 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.15M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you. Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.