asn.dev

Observed topology

AS51580 TIMENET-AS

Upstreams 11 carry this network
Downstreams 4 this network carries
Adjacent (IPv4) 15
Adjacent (IPv6) 0

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS51580: 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
AS41327Fiber Telecom S.p.A.ResidentialIPv4923
AS12874Fastweb SpAResidentialIPv4378
AS9002RETN LimitedUnclassifiedIPv4237
AS6939Hurricane Electric LLCTransitIPv4186
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv490
AS3269Telecom Italia S.p.A.ResidentialIPv482
AS3257GTT Communications Inc.TransitIPv476
AS28716Retelit Digital Services S.p.A.UnclassifiedIPv463
AS59919Brainbox S.r.l.ResidentialIPv418
AS24482SG.GSHostingIPv418
AS12779IT.Gate S.p.A.UnclassifiedIPv48

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.

Transit

Downstream networks

inferred

Networks for which AS51580 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS202552PROTEC di Rinaldo Silvano & C. SncUnclassifiedIPv4106
AS41071OPENPOP SAUnclassifiedIPv463
AS211756NEW ASSISTENT S.R.L.UnclassifiedIPv460
AS212608SOLUNET GROUP S.P.A.ResidentialIPv450

Adjacency

Adjacent networks

15 shown

Every AS seen directly next to AS51580 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS41327Fiber Telecom S.p.A.ResidentialIPv41,062
AS12874Fastweb SpAResidentialIPv4432
AS9002RETN LimitedUnclassifiedIPv4264
AS6939Hurricane Electric LLCTransitIPv4207
AS202552PROTEC di Rinaldo Silvano & C. SncUnclassifiedIPv4106
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4100
AS3257GTT Communications Inc.TransitIPv496
AS3269Telecom Italia S.p.A.ResidentialIPv487
AS28716Retelit Digital Services S.p.A.UnclassifiedIPv463
AS41071OPENPOP SAUnclassifiedIPv463
AS211756NEW ASSISTENT S.R.L.UnclassifiedIPv460
AS212608SOLUNET GROUP S.P.A.ResidentialIPv450
AS59919Brainbox S.r.l.ResidentialIPv419
AS24482SG.GSHostingIPv419
AS12779IT.Gate S.p.A.UnclassifiedIPv49

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.

Interconnection

Exchange presence

recorded

Internet exchanges where Packet Clearing House has a port recorded for AS51580, largest fabric first. An exchange is shared switching where networks interconnect directly rather than paying a transit provider to carry traffic between them, so turning up at one is a deliberate choice about how this network wants to be reached. Each name opens that exchange's own page, with its peering LANs and every other network recorded on it. Recorded at 4 exchanges across 1 country and 1 region.

ExchangeLocationTheir addressMember ports
Milan Internet ExchangeMilan, Italy217.29.66.170416
Roma Internet Exchange PointRome, Italy193.201.29.27225
Torino Piemonte Exchange PointTorino, Italy194.116.96.156123
Milan Neutral Access PointMilan, Italy185.1.114.49115

Unlike the tables above, this is recorded rather than inferred. An address on a peering LAN is at that exchange by definition. Two carve-outs all the same. Member ports counts every participant at the exchange, not this network's ports, so read it as a size proxy. And an absent exchange means PCH has no record of it, not that the network is not there.

Provenance

Where this comes from

Derived from routing tables collected at 2026-08-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.02M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.

Exchange presence comes from a separate dataset: the directory collected 2026-08-09 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,164 recorded member ports, licensed CC BY-NC-SA 3.0.

PeeringDB is the better-known directory and is deliberately not the source here: its acceptable-use policy forbids the bulk storage this needs. The two answer different questions anyway. PeeringDB reports what an operator declares about itself; this reports what PCH has recorded.