asn.dev

Observed topology

AS51333 ARCOLINK-ASN Arcolink Telecomunicazioni S.r.l.

Residential RIPE

Upstreams 19 carry this network
Downstreams 1 this network carries
Adjacent (IPv4) 18
Adjacent (IPv6) 13
Upstream graph Who carries AS51333, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS51333 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 19

Networks observed carrying traffic for AS51333: 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
AS174Cogent Communications, LLCTransitIPv4 IPv6306
AS6939Hurricane Electric LLCTransitIPv4 IPv6130
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv666
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv613
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv613
AS24482SG.GSHostingIPv4 IPv613
AS31543myNet GmbHResidentialIPv4 IPv613
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv613
AS48185team.blue NVUnclassifiedIPv4 IPv613
AS204092Association GRIFONUnclassifiedIPv4 IPv613

All 19 upstreams →

Transit

Downstream networks

inferred

Networks for which AS51333 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS205219WISP.ONE S.R.L.UnclassifiedIPv4 IPv6146

Adjacency

Adjacent networks

All 20

Every AS seen directly next to AS51333 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS174Cogent Communications, LLCTransitIPv4 IPv6398
AS205219WISP.ONE S.R.L.UnclassifiedIPv4 IPv6146
AS6939Hurricane Electric LLCTransitIPv4 IPv6130
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv697
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv615
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv615
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv615
AS48185team.blue NVUnclassifiedIPv4 IPv615
AS204092Association GRIFONUnclassifiedIPv4 IPv615
AS24482SG.GSHostingIPv4 IPv613

All 20 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-21 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M 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.