asn.dev

Observed topology

AS41327 FIBERTELECOM-AS Fiber Telecom S.p.A.

Residential RIPE

Upstreams 40 carry this network
Downstreams 143 this network carries
Adjacent (IPv4) 188
Adjacent (IPv6) 87
Upstream graph Who carries AS41327, and who carries them, drawn as a map up to the transit-free core. 22 exchanges Where AS41327 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 40

Networks observed carrying traffic for AS41327: 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
AS1299Arelion Sweden ABTransitIPv4 IPv6151
AS6939Hurricane Electric LLCTransitIPv4 IPv6131
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv6107
AS174Cogent Communications, LLCTransitIPv4 IPv697
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv481
AS3356Level 3 Parent, LLCTransitIPv4 IPv675
AS3257GTT Communications Inc.TransitIPv452
AS2914NTT America, Inc.TransitIPv448
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv646
AS58057Securebit AGUnclassifiedIPv4 IPv646

All 40 upstreams →

Transit

Downstream networks

All 143

Networks for which AS41327 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS203059Consorzio Energetico Val Venosta Soc. Coop.ResidentialIPv4 IPv61,547
AS51580TIMENET SPAResidentialIPv41,039
AS34758Axera SpAResidentialIPv4 IPv6869
AS205330Ari@net SRLResidentialIPv4 IPv6851
AS21101Sistemi Hardware&Software S.P.A.ResidentialIPv4820
AS48544Tecnotel Servizi Tecnologici srlUnclassifiedIPv4815
AS198399FASTCON srlResidentialIPv4796
AS200148FIDOKA srl SBUnclassifiedIPv4702
AS200553Interfibra S.R.L.ResidentialIPv4 IPv6660
AS13182Made Network SrlHostingIPv4 IPv6649

All 143 downstreams →

Adjacency

Adjacent networks

All 194

Every AS seen directly next to AS41327 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv4 IPv63,238
AS3356Level 3 Parent, LLCTransitIPv4 IPv62,689
AS1299Arelion Sweden ABTransitIPv4 IPv62,475
AS174Cogent Communications, LLCTransitIPv4 IPv62,253
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv61,997
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv61,953
AS3257GTT Communications Inc.TransitIPv4 IPv61,793
AS22652Videotron LteeResidentialIPv4 IPv61,554
AS203059Consorzio Energetico Val Venosta Soc. Coop.ResidentialIPv4 IPv61,547
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv61,518

All 194 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-14 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.25M 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.