asn.dev

Observed topology

AS8400 TELEKOM-AS TELEKOM SRBIJA a.d.

Residential APNIC NSP

Upstreams 34 carry this network
Downstreams 86 this network carries
Adjacent (IPv4) 121
Adjacent (IPv6) 40
Upstream graph Who carries AS8400, and who carries them, drawn as a map up to the transit-free core. 11 exchanges Where AS8400 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 34

Networks observed carrying traffic for AS8400: 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 IPv6982
AS3356Level 3 Parent, LLCTransitIPv4 IPv6977
AS6939Hurricane Electric LLCTransitIPv4 IPv6552
AS9002RETN LimitedUnclassifiedIPv4 IPv6354
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4346
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6270
AS50304Blix Solutions ASUnclassifiedIPv4 IPv6182
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv691
AS24482SG.GSHostingIPv4 IPv691
AS34019Hivane AssociationUnclassifiedIPv4 IPv691

All 34 upstreams →

Transit

Downstream networks

All 86

Networks for which AS8400 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS6700TELEKOM SRBIJA a.d.ResidentialIPv4 IPv64,085
AS43940Drustvo za telekomunikacije "MTEL" DOOUnclassifiedIPv4 IPv63,877
AS9125Drustvo za telekomunikacije Orion telekom doo Beograd-ZemunResidentialIPv42,851
AS28964Orion Telekom Tim d.o.o.BeogradUnclassifiedIPv42,684
AS33983ARTMOTION SH.P.K.UnclassifiedIPv4 IPv61,880
AS197423Jotel d.o.o.UnclassifiedIPv41,408
AS52116Orion Telekom Tim d.o.o.BeogradUnclassifiedIPv41,342
AS25144"Telekomunikacije Republike Srpske" akcionarsko drustvo Banja LukaUnclassifiedIPv4 IPv61,302
AS203877ASTRA TELEKOM DOO BEOGRADUnclassifiedIPv41,025
AS13091Posta Srbije Drustvo S Ogranicenom Odgovornoscu, BeogradUnclassifiedIPv4732

All 86 downstreams →

Adjacency

Adjacent networks

All 125

Every AS seen directly next to AS8400 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4 IPv67,109
AS1299Arelion Sweden ABTransitIPv4 IPv66,794
AS43940Drustvo za telekomunikacije "MTEL" DOOUnclassifiedIPv4 IPv65,523
AS6700TELEKOM SRBIJA a.d.ResidentialIPv4 IPv65,017
AS6939Hurricane Electric LLCTransitIPv4 IPv64,017
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv63,821
AS9125Drustvo za telekomunikacije Orion telekom doo Beograd-ZemunResidentialIPv43,280
AS28964Orion Telekom Tim d.o.o.BeogradUnclassifiedIPv42,745
AS25144"Telekomunikacije Republike Srpske" akcionarsko drustvo Banja LukaUnclassifiedIPv4 IPv62,527
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv62,195

All 125 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M 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.