asn.dev

Observed topology

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

Residential RIPE

Upstreams 40 carry this network
Downstreams 144 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 IPv6167
AS6939Hurricane Electric LLCTransitIPv4 IPv6113
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv6107
AS174Cogent Communications, LLCTransitIPv4 IPv697
AS3356Level 3 Parent, LLCTransitIPv4 IPv675
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv463
AS2914NTT America, Inc.TransitIPv448
AS3257GTT Communications Inc.TransitIPv4 IPv648
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv646
AS58057Securebit AGUnclassifiedIPv4 IPv646

All 40 upstreams →

Transit

Downstream networks

All 144

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 IPv61,498
AS51580TIMENET SPAResidentialIPv4881
AS205330Ari@net SRLResidentialIPv4 IPv6836
AS48544Tecnotel Servizi Tecnologici srlUnclassifiedIPv4786
AS198399FASTCON srlResidentialIPv4784
AS21101Sistemi Hardware&Software S.P.A.ResidentialIPv4780
AS34758Axera SpAResidentialIPv4 IPv6755
AS200148FIDOKA srl SBUnclassifiedIPv4688
AS13182Made Network SrlHostingIPv4 IPv6651
AS200553Interfibra S.R.L.ResidentialIPv4 IPv6649

All 144 downstreams →

Adjacency

Adjacent networks

All 193

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

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv4 IPv63,391
AS3356Level 3 Parent, LLCTransitIPv4 IPv62,697
AS1299Arelion Sweden ABTransitIPv4 IPv62,630
AS174Cogent Communications, LLCTransitIPv4 IPv62,293
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv62,009
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv61,966
AS22652Videotron LteeResidentialIPv4 IPv61,570
AS3257GTT Communications Inc.TransitIPv4 IPv61,524
AS203059Consorzio Energetico Val Venosta Soc. Coop.ResidentialIPv4 IPv61,498
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv61,452

All 193 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.00M 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.