asn.dev

Observed topology

AS28103 AS28103 - TECNOLOGIA EN ELECTRONICA E INFORMATICA SOCIEDAD ANONIMA (T.E.I.S.A)

Residential ARIN

Upstreams 3 carry this network
Downstreams 11 this network carries
Adjacent (IPv4) 14
Adjacent (IPv6) 2
Upstream graph Who carries AS28103, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS28103 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS28103: 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
AS13335Cloudflare, Inc.HostingIPv41,976
AS52468UFINET PANAMA S.A.UnclassifiedIPv4 IPv661
AS23201Telecel S.A.ResidentialIPv4 IPv631

Transit

Downstream networks

All 11

Networks for which AS28103 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS272021ITAIPU BINACIONALUnclassifiedIPv486
AS262250Direccion Nacional de Contrataciones PublicasUnclassifiedIPv459
AS263812SONDATECH S.A.S.UnclassifiedIPv458
AS52227Banco Itau Paraguay S.A.UnclassifiedIPv420
AS52418NETEL S.A.UnclassifiedIPv420
AS52445FINANCIERA PARAGUAYO JAPONESA S.A.UnclassifiedIPv420
AS263169Vision BancoUnclassifiedIPv420
AS263727Subsecretaria de Estado de TributacionUnclassifiedIPv420
AS272154DIRECCION NACIONAL DE ADUANASUnclassifiedIPv419
AS267723SOLAR BANCO S.A.E.UnclassifiedIPv417

All 11 downstreams →

Adjacency

Adjacent networks

All 14

Every AS seen directly next to AS28103 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS13335Cloudflare, Inc.HostingIPv41,976
AS52468UFINET PANAMA S.A.UnclassifiedIPv4 IPv6381
AS272021ITAIPU BINACIONALUnclassifiedIPv486
AS23201Telecel S.A.ResidentialIPv4 IPv668
AS262250Direccion Nacional de Contrataciones PublicasUnclassifiedIPv459
AS263812SONDATECH S.A.S.UnclassifiedIPv458
AS52227Banco Itau Paraguay S.A.UnclassifiedIPv420
AS52418NETEL S.A.UnclassifiedIPv420
AS52445FINANCIERA PARAGUAYO JAPONESA S.A.UnclassifiedIPv420
AS263169Vision BancoUnclassifiedIPv420

All 14 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-10 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 71.97M 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.