asn.dev

Observed topology

AS15958 CETIN_doo_AS CETIN Ltd. Belgrade

Unclassified RIPE NSP

Upstreams 37 carry this network
Downstreams 27 this network carries
Adjacent (IPv4) 67
Adjacent (IPv6) 29
Upstream graph Who carries AS15958, and who carries them, drawn as a map up to the transit-free core. 8 exchanges Where AS15958 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 37

Networks observed carrying traffic for AS15958: 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
AS44306OMONIA d.o.o.UnclassifiedIPv498
AS6939Hurricane Electric LLCTransitIPv4 IPv686
AS1299Arelion Sweden ABTransitIPv4 IPv634
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv623
AS3356Level 3 Parent, LLCTransitIPv4 IPv622
AS6461Zayo BandwidthTransitIPv4 IPv622
AS50304Blix Solutions ASUnclassifiedIPv414
AS174Cogent Communications, LLCTransitIPv4 IPv613
AS9002RETN LimitedUnclassifiedIPv4 IPv611
AS24482SG.GSHostingIPv4 IPv610

All 37 upstreams →

Transit

Downstream networks

All 27

Networks for which AS15958 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS197423Jotel d.o.o.UnclassifiedIPv41,469
AS31042Yettel d.o.o.ResidentialIPv4 IPv61,130
AS203877ASTRA TELEKOM DOO BEOGRADUnclassifiedIPv4949
AS14544Oracle CorporationUnclassifiedIPv4 IPv6724
AS34724BAU NETWORKS DOO TORNJOSUnclassifiedIPv4217
AS213306Comtrade System Integration doo Belgrade SerbiaUnclassifiedIPv4181
AS15397One Crna Gora DOOUnclassifiedIPv4 IPv6171
AS201236NETCAST OBLAK d.o.o. BeogradUnclassifiedIPv4 IPv6157
AS51859Mainstream doo BeogradUnclassifiedIPv4 IPv6140
AS12417Plus Hosting Grupa d.o.o.UnclassifiedIPv4120

All 27 downstreams →

Adjacency

Adjacent networks

All 69

Every AS seen directly next to AS15958 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS31042Yettel d.o.o.ResidentialIPv4 IPv67,021
AS1299Arelion Sweden ABTransitIPv4 IPv63,650
AS6461Zayo BandwidthTransitIPv4 IPv61,865
AS9002RETN LimitedUnclassifiedIPv4 IPv61,504
AS197423Jotel d.o.o.UnclassifiedIPv41,469
AS6939Hurricane Electric LLCTransitIPv4 IPv61,277
AS44306OMONIA d.o.o.UnclassifiedIPv4 IPv61,231
AS203877ASTRA TELEKOM DOO BEOGRADUnclassifiedIPv4949
AS14544Oracle CorporationUnclassifiedIPv4 IPv6724
AS15397One Crna Gora DOOUnclassifiedIPv4 IPv6715

All 69 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-01 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.48M 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.