asn.dev

Observed topology

AS48638 CRONOS Cronos NV

Unclassified RIPE Cable/DSL/ISP

Upstreams 20 carry this network
Downstreams 2 this network carries
Adjacent (IPv4) 19
Adjacent (IPv6) 14
Upstream graph Who carries AS48638, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS48638 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 20

Networks observed carrying traffic for AS48638: 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 IPv6157
AS6939Hurricane Electric LLCTransitIPv4 IPv664
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4 IPv640
AS3257GTT Communications Inc.TransitIPv4 IPv637
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv67
AS24482SG.GSHostingIPv4 IPv67
AS34019Hivane AssociationUnclassifiedIPv4 IPv67
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv67
AS45049Mohamed El BoudduntiResidentialIPv4 IPv67
AS48185team.blue NVUnclassifiedIPv4 IPv67

All 20 upstreams →

Transit

Downstream networks

inferred

Networks for which AS48638 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS202713Stadsbader Contractors BVUnclassifiedIPv478
AS39842COMPAGNIE D'ENTREPRISES CFE S.A.UnclassifiedIPv459

Adjacency

Adjacent networks

All 22

Every AS seen directly next to AS48638 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv6216
AS202713Stadsbader Contractors BVUnclassifiedIPv478
AS6939Hurricane Electric LLCTransitIPv4 IPv673
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4 IPv668
AS39842COMPAGNIE D'ENTREPRISES CFE S.A.UnclassifiedIPv459
AS3257GTT Communications Inc.TransitIPv4 IPv654
AS24482SG.GSHostingIPv4 IPv610
AS34019Hivane AssociationUnclassifiedIPv4 IPv610
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv610
AS45049Mohamed El BoudduntiResidentialIPv4 IPv610

All 22 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-05 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 73.57M 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.