asn.dev

Observed topology

AS1853 ACONET ACOnet Backbone

Unclassified RIPE Educational/Research

Upstreams 11 carry this network
Downstreams 48 this network carries
Adjacent (IPv4) 56
Adjacent (IPv6) 34
Upstream graph Who carries AS1853, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS1853 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 11

Networks observed carrying traffic for AS1853: 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
AS6939Hurricane Electric LLCTransitIPv4 IPv6655
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbHUnclassifiedIPv4 IPv6163
AS21320GEANT VerenigingUnclassifiedIPv4 IPv6108
AS20965GEANT VerenigingUnclassifiedIPv4 IPv689
AS9002RETN LimitedUnclassifiedIPv4 IPv664
AS2852CESNET z.s.p.o.EducationIPv4 IPv635
AS33891Core-Backbone GmbHHostingIPv4 IPv620
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv619
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv619
AS2607Zdruzenie pouzivatelov Slovenskej akademickej datovej siete SANETEducationIPv49

All 11 upstreams →

Transit

Downstream networks

All 48

Networks for which AS1853 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS760Vienna UniversityUnclassifiedIPv4483
AS1205University LinzUnclassifiedIPv4 IPv6313
AS47515Bundesministerium fuer Inneres, Sektion IVUnclassifiedIPv4 IPv6232
AS51066Austro Control Oesterreichische Gesellschaft fuer Zivilluftfahrt mit beschraenkter HaftungUnclassifiedIPv4 IPv6207
AS39837Verein zur Foerderung von NetzwerkkunstUnclassifiedIPv4 IPv6176
AS42685BundeskanzleramtUnclassifiedIPv4173
AS39057DVT-Daten-Verarbeitung-Tirol GmbHUnclassifiedIPv4 IPv6168
AS208740Bundesministerium fuer europaeische und internationale AngelegenheitenUnclassifiedIPv4 IPv6147
AS12991Amt der Ooe. LandesregierungUnclassifiedIPv4 IPv6146
AS8692Bundesrechenzentrum GmbHUnclassifiedIPv4 IPv6143

All 48 downstreams →

Adjacency

Adjacent networks

All 59

Every AS seen directly next to AS1853 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv63,334
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbHUnclassifiedIPv4 IPv6814
AS21320GEANT VerenigingUnclassifiedIPv4 IPv6684
AS20965GEANT VerenigingUnclassifiedIPv4 IPv6532
AS760Vienna UniversityUnclassifiedIPv4 IPv6524
AS9002RETN LimitedUnclassifiedIPv4 IPv6461
AS2852CESNET z.s.p.o.EducationIPv4 IPv6392
AS1205University LinzUnclassifiedIPv4 IPv6313
AS47515Bundesministerium fuer Inneres, Sektion IVUnclassifiedIPv4 IPv6232
AS51066Austro Control Oesterreichische Gesellschaft fuer Zivilluftfahrt mit beschraenkter HaftungUnclassifiedIPv4 IPv6207

All 59 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-28 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.21M 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.