asn.dev

Observed topology

AS15994 A1HR A1 Hrvatska Zagreb, Croatia

Residential RIPE

Upstreams 3 carry this network
Downstreams 57 this network carries
Adjacent (IPv4) 64
Adjacent (IPv6) 13
Upstream graph Who carries AS15994, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS15994 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS15994: 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
AS3356Level 3 Parent, LLCTransitIPv4 IPv6563
AS8447A1 Telekom Austria AGResidentialIPv4 IPv6201
AS6939Hurricane Electric LLCTransitIPv4 IPv6128

Transit

Downstream networks

All 57

Networks for which AS15994 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS35549A1 Hrvatska d.o.o.UnclassifiedIPv4915
AS12810A1 Hrvatska d.o.o.UnclassifiedIPv4 IPv6713
AS31012A1 Hrvatska d.o.o.UnclassifiedIPv4 IPv6539
AS49498Axians Hrvatska d.o.o.UnclassifiedIPv4300
AS41121Ministarstvo unutarnjih poslova Republike HrvatskeUnclassifiedIPv4254
AS48797Odasiljaci i veze d.o.o.UnclassifiedIPv4180
AS59786OTP banka d.d.UnclassifiedIPv4163
AS29485A1 Hrvatska d.o.o.UnclassifiedIPv4 IPv6160
AS203876PLINACRO d.o.o.UnclassifiedIPv4159
AS44330all eyes on screens d.o.o.UnclassifiedIPv4 IPv6133

All 57 downstreams →

Adjacency

Adjacent networks

All 65

Every AS seen directly next to AS15994 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv64,239
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,894
AS8447A1 Telekom Austria AGResidentialIPv4 IPv61,154
AS35549A1 Hrvatska d.o.o.UnclassifiedIPv41,037
AS12810A1 Hrvatska d.o.o.UnclassifiedIPv4 IPv6713
AS31012A1 Hrvatska d.o.o.UnclassifiedIPv4 IPv6539
AS49498Axians Hrvatska d.o.o.UnclassifiedIPv4300
AS41121Ministarstvo unutarnjih poslova Republike HrvatskeUnclassifiedIPv4254
AS199433Koncar-Elektronika i informatika d.d.UnclassifiedIPv4211
AS12956TELEFONICA GLOBAL SOLUTIONS SLTransitIPv4181

All 65 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-20 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.16M 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.