asn.dev

Observed topology

AS28580 Cilnet Comunicacao e Informatica S.A.

Unclassified RIPE Cable/DSL/ISP

Upstreams 7 carry this network
Downstreams 5 this network carries
Adjacent (IPv4) 12
Adjacent (IPv6) 12
Upstream graph Who carries AS28580, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS28580 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS28580: 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
AS6939Hurricane Electric LLCTransitIPv4 IPv62,680
AS37468Angola CablesUnclassifiedIPv4 IPv6874
AS3356Level 3 Parent, LLCTransitIPv4 IPv6582
AS28649Desktop Sigmanet Comunicacao Multimidia SAResidentialIPv4 IPv6298
AS24482SG.GSHostingIPv4 IPv6136
AS35280F5 Networks SARLHostingIPv4 IPv6121
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv693

Transit

Downstream networks

inferred

Networks for which AS28580 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS266462SW Telecomunicacoes e Informatica Itu Ltda. - MEUnclassifiedIPv4 IPv6663
AS268989MULTTV CONSULTORIA E LOCACOES DE EQUIPAMENTOS S.A.UnclassifiedIPv4 IPv6153
AS61855NOVA NET TECNOLOGIA LTDA - MEUnclassifiedIPv4 IPv6149
AS52887Associacao Torre de Vigia de Biblias e TratadosUnclassifiedIPv4 IPv646
AS273335Johnny Frank Varas MEResidentialIPv4 IPv635

Adjacency

Adjacent networks

All 12

Every AS seen directly next to AS28580 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv62,914
AS37468Angola CablesUnclassifiedIPv4 IPv61,401
AS3356Level 3 Parent, LLCTransitIPv4 IPv6813
AS266462SW Telecomunicacoes e Informatica Itu Ltda. - MEUnclassifiedIPv4 IPv6663
AS28649Desktop Sigmanet Comunicacao Multimidia SAResidentialIPv4 IPv6333
AS24482SG.GSHostingIPv4 IPv6155
AS268989MULTTV CONSULTORIA E LOCACOES DE EQUIPAMENTOS S.A.UnclassifiedIPv4 IPv6153
AS61855NOVA NET TECNOLOGIA LTDA - MEUnclassifiedIPv4 IPv6149
AS35280F5 Networks SARLHostingIPv4 IPv6121
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv693

All 12 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-22 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.12M 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.