asn.dev

Observed topology

AS31638 ASN-LEPIDA Lepida S.c.p.A.

Unclassified RIPE NSP

Upstreams 34 carry this network
Downstreams 6 this network carries
Adjacent (IPv4) 37
Adjacent (IPv6) 18
Upstream graph Who carries AS31638, and who carries them, drawn as a map up to the transit-free core. 9 exchanges Where AS31638 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 34

Networks observed carrying traffic for AS31638: 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
AS137Consortium GARRUnclassifiedIPv42,876
AS9002RETN LimitedUnclassifiedIPv4 IPv6712
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv6527
AS6939Hurricane Electric LLCTransitIPv4 IPv6450
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6194
AS50304Blix Solutions ASUnclassifiedIPv4128
AS24482SG.GSHostingIPv4 IPv667
AS3303Swisscom (Schweiz) AGResidentialIPv466
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv666
AS48185team.blue NVUnclassifiedIPv4 IPv666

All 34 upstreams →

Transit

Downstream networks

inferred

Networks for which AS31638 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS201198Airgrid S.R.L.ResidentialIPv4 IPv6274
AS12835Trentino Digitale SPAResidentialIPv4252
AS63293Facebook, Inc.HostingIPv4 IPv696
AS42081European Centre for Medium-Range Weather Forecasts (ECMWF)UnclassifiedIPv4 IPv682
AS15584Informatica Alto Adige SpaUnclassifiedIPv458
AS200480PASUBIO TECNOLOGIA SRLResidentialIPv435

Adjacency

Adjacent networks

All 40

Every AS seen directly next to AS31638 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS137Consortium GARRUnclassifiedIPv42,876
AS9002RETN LimitedUnclassifiedIPv4 IPv61,108
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv6721
AS6939Hurricane Electric LLCTransitIPv4 IPv6534
AS12835Trentino Digitale SPAResidentialIPv4294
AS201198Airgrid S.R.L.ResidentialIPv4 IPv6274
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6214
AS50304Blix Solutions ASUnclassifiedIPv4142
AS63293Facebook, Inc.HostingIPv4 IPv696
AS42081European Centre for Medium-Range Weather Forecasts (ECMWF)UnclassifiedIPv4 IPv682

All 40 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.