Observed topology

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

Residential ARIN Cable/DSL/ISP

Upstreams 3 carry this network

Downstreams 10 this network carries

Adjacent (IPv4) 13

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.

AS	Network	Type	Families	Paths seen
AS13335	Cloudflare, Inc.	Hosting	IPv4	2,012
AS52468	UFINET PANAMA S.A.	Unclassified	IPv4 IPv6	70
AS23201	Telecel S.A.	Residential	IPv4 IPv6	28

Transit

Downstream networks

inferred

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

AS	Network	Type	Families	Paths seen
AS272021	ITAIPU BINACIONAL	Unclassified	IPv4	99
AS262250	Direccion Nacional de Contrataciones Publicas	Unclassified	IPv4	61
AS263812	SONDATECH S.A.S.	Unclassified	IPv4	61
AS52418	NETEL S.A.	Unclassified	IPv4	27
AS263169	Vision Banco	Unclassified	IPv4	27
AS263727	Subsecretaria de Estado de Tributacion	Unclassified	IPv4	27
AS52227	Banco Itau Paraguay S.A.	Unclassified	IPv4	26
AS52445	FINANCIERA PARAGUAYO JAPONESA S.A.	Unclassified	IPv4	25
AS272154	DIRECCION NACIONAL DE ADUANAS	Unclassified	IPv4	25
AS267723	SOLAR BANCO S.A.E.	Unclassified	IPv4	20

Adjacency

Adjacent networks

All 13

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

AS	Network	Type	Families	Paths seen
AS13335	Cloudflare, Inc.	Hosting	IPv4	2,012
AS52468	UFINET PANAMA S.A.	Unclassified	IPv4 IPv6	441
AS272021	ITAIPU BINACIONAL	Unclassified	IPv4	99
AS262250	Direccion Nacional de Contrataciones Publicas	Unclassified	IPv4	61
AS263812	SONDATECH S.A.S.	Unclassified	IPv4	61
AS23201	Telecel S.A.	Residential	IPv4 IPv6	55
AS52418	NETEL S.A.	Unclassified	IPv4	27
AS263169	Vision Banco	Unclassified	IPv4	27
AS263727	Subsecretaria de Estado de Tributacion	Unclassified	IPv4	27
AS52227	Banco Itau Paraguay S.A.	Unclassified	IPv4	26

All 13 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-30 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.49M 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.