asn.dev

Observed topology

AS52251 AS52251 - NORTECH

Unclassified ARIN Cable/DSL/ISP

Upstreams 4 carry this network
Downstreams 11 this network carries
Adjacent (IPv4) 15
Adjacent (IPv6) 4
Upstream graph Who carries AS52251, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS52251 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS52251: 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
AS266725SOLUTION LAN S.AUnclassifiedIPv43,321
AS6939Hurricane Electric LLCTransitIPv41,290
AS52468UFINET PANAMA S.A.UnclassifiedIPv4426
AS7195EDGEUNO S.A.SUnclassifiedIPv4 IPv6315

Transit

Downstream networks

All 11

Networks for which AS52251 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS52426I-SUR WISP S.R.L.UnclassifiedIPv4814
AS262196InterfaceUnclassifiedIPv4 IPv6345
AS267856ASOCIACION PARA EL FORTALECIMIENTO COMUNITARIOUnclassifiedIPv4299
AS264619Wireless ProviderUnclassifiedIPv4207
AS271815GUSTAVO JAVIER VULTAGGIOUnclassifiedIPv4166
AS269890NETIFOX S.R.LUnclassifiedIPv4 IPv6148
AS263737Grupo Fullsat SRLUnclassifiedIPv4144
AS264669TECNOCOMP S.R.L.UnclassifiedIPv4110
AS266750CONECTADOZ S.R.L.UnclassifiedIPv454
AS263729Pedraza Luis Eduardo (DANEZ)ResidentialIPv4 IPv646

All 11 downstreams →

Adjacency

Adjacent networks

All 15

Every AS seen directly next to AS52251 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS266725SOLUTION LAN S.AUnclassifiedIPv43,713
AS6939Hurricane Electric LLCTransitIPv42,094
AS7195EDGEUNO S.A.SUnclassifiedIPv4 IPv61,597
AS52426I-SUR WISP S.R.L.UnclassifiedIPv4814
AS52468UFINET PANAMA S.A.UnclassifiedIPv4430
AS262196InterfaceUnclassifiedIPv4 IPv6345
AS264619Wireless ProviderUnclassifiedIPv4324
AS267856ASOCIACION PARA EL FORTALECIMIENTO COMUNITARIOUnclassifiedIPv4299
AS271815GUSTAVO JAVIER VULTAGGIOUnclassifiedIPv4166
AS269890NETIFOX S.R.LUnclassifiedIPv4 IPv6148

All 15 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.