asn.dev

Observed topology

AS31313 STS Bucharest, 323A Splaiul Independentei,Sector 6,060044,Romania

Hosting RIPE Network Services

Upstreams 6 carry this network
Downstreams 31 this network carries
Adjacent (IPv4) 38
Adjacent (IPv6) 9
Upstream graph Who carries AS31313, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS31313 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS31313: 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
AS174Cogent Communications, LLCTransitIPv4 IPv61,847
AS6939Hurricane Electric LLCTransitIPv4 IPv6608
AS5511Orange S.A.TransitIPv4 IPv6491
AS1273IDDQD-ASBusinessIPv4 IPv6164
AS24482SG.GSHostingIPv4 IPv655
AS20764CJSC RASCOMUnclassifiedIPv454

Transit

Downstream networks

All 31

Networks for which AS31313 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS20929The Information Technology DivisionUnclassifiedIPv4 IPv6208
AS50252Camera DeputatilorUnclassifiedIPv4174
AS50944Institutul National al PatrimoniuluiUnclassifiedIPv4116
AS39815"Lucian Blaga" University of SibiuUnclassifiedIPv4110
AS60583SOCIETATEA NATIONALA NUCLEARELECTRICA SA BUCURESTI SUCURSALA CNE CERNAVODAUnclassifiedIPv4106
AS205861Unitatea Militara 02630UnclassifiedIPv494
AS25304Universitatea TRANSILVANIA BrasovUnclassifiedIPv4 IPv685
AS25278Autoritatea pentru Digitalizarea RomanieiUnclassifiedIPv458
AS42142Agentia Nationala pentru Protectia MediuluiUnclassifiedIPv458
AS43899Societatea Romana de TeleviziuneUnclassifiedIPv458

All 31 downstreams →

Adjacency

Adjacent networks

All 39

Every AS seen directly next to AS31313 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS174Cogent Communications, LLCTransitIPv4 IPv62,947
AS6939Hurricane Electric LLCTransitIPv4 IPv6937
AS5511Orange S.A.TransitIPv4 IPv6802
AS1273IDDQD-ASBusinessIPv4 IPv6268
AS20929The Information Technology DivisionUnclassifiedIPv4 IPv6208
AS50252Camera DeputatilorUnclassifiedIPv4174
AS39279Information Technology and Cyber Security ServiceUnclassifiedIPv4126
AS50944Institutul National al PatrimoniuluiUnclassifiedIPv4116
AS39815"Lucian Blaga" University of SibiuUnclassifiedIPv4110
AS60583SOCIETATEA NATIONALA NUCLEARELECTRICA SA BUCURESTI SUCURSALA CNE CERNAVODAUnclassifiedIPv4106

All 39 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-11 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.47M 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.