asn.dev

Observed topology

AS61665 ROMICROS BRASIL LTDA

Residential LACNIC Cable/DSL/ISP

Upstreams 6 carry this network
Downstreams 5 this network carries
Adjacent (IPv4) 12
Adjacent (IPv6) 8
Upstream graph Who carries AS61665, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS61665 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS61665: 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
AS53180INFORTEL COMUNICACOES LTDAResidentialIPv4 IPv6472
AS263903INFORBARRA TELECOMUnclassifiedIPv4 IPv6246
AS6939Hurricane Electric LLCTransitIPv4 IPv6205
AS24482SG.GSHostingIPv4 IPv618
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv65
AS35280F5 Networks SARLHostingIPv41

Transit

Downstream networks

inferred

Networks for which AS61665 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS265391PROVEX TELECOMUNICACOES LTDAUnclassifiedIPv4118
AS61798HIGH TECH TELECOM LTDAUnclassifiedIPv4 IPv646
AS272537DIRECT NET CONEXOES RAPIDAS LTDA - MEUnclassifiedIPv633
AS266238NETCANES TELECOMUnclassifiedIPv425
AS270267GLOBALWEB TELECOMUNICACAOUnclassifiedIPv4 IPv67

Adjacency

Adjacent networks

All 12

Every AS seen directly next to AS61665 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS53180INFORTEL COMUNICACOES LTDAResidentialIPv4 IPv6672
AS263903INFORBARRA TELECOMUnclassifiedIPv4 IPv6274
AS6939Hurricane Electric LLCTransitIPv4 IPv6259
AS265391PROVEX TELECOMUNICACOES LTDAUnclassifiedIPv4118
AS272537DIRECT NET CONEXOES RAPIDAS LTDA - MEUnclassifiedIPv4 IPv692
AS61798HIGH TECH TELECOM LTDAUnclassifiedIPv4 IPv646
AS266238NETCANES TELECOMUnclassifiedIPv425
AS24482SG.GSHostingIPv4 IPv622
AS270267GLOBALWEB TELECOMUNICACAOUnclassifiedIPv4 IPv67
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv66

All 12 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-19 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.