asn.dev

Observed topology

AS43139 MAXIMUMA-AS

Unclassified RIPE Cable/DSL/ISP

Upstreams 26 carry this network
Downstreams 21 this network carries
Adjacent (IPv4) 46
Adjacent (IPv6) 4
Upstream graph Who carries AS43139, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS43139 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 26

Networks observed carrying traffic for AS43139: 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
AS9002RETN LimitedUnclassifiedIPv4432
AS35297Dataline LLCUnclassifiedIPv4 IPv6201
AS6939Hurricane Electric LLCTransitIPv497
AS50263A-Systems Sp. z o.o.UnclassifiedIPv433
AS35320Eurotranstelecom LtdUnclassifiedIPv431
AS24482SG.GSHostingIPv4 IPv615
AS3303Swisscom (Schweiz) AGResidentialIPv414
AS34927iFog GmbHHostingIPv410
AS8218Zayo Infrastructure France SAUnclassifiedIPv44
AS29632Netassist International EOODUnclassifiedIPv64

All 26 upstreams →

Transit

Downstream networks

All 21

Networks for which AS43139 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS213724Maximum-Net LLCUnclassifiedIPv4725
AS201041Obltelecom LLCUnclassifiedIPv4305
AS209548IrpenComunikaciaService LLCUnclassifiedIPv4183
AS41586Ukrainian Internet Company LLCUnclassifiedIPv4161
AS25514Modus-Global LLCUnclassifiedIPv4122
AS42259"BILHORODNET" Limited Liability CompanyUnclassifiedIPv4122
AS48019Terra-Telecom LLCUnclassifiedIPv4122
AS12545Transcom LtdUnclassifiedIPv461
AS41467"DOMINET" LLCUnclassifiedIPv461
AS45017"DOMINET" LLCUnclassifiedIPv461

All 21 downstreams →

Adjacency

Adjacent networks

All 47

Every AS seen directly next to AS43139 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS9002RETN LimitedUnclassifiedIPv41,847
AS213724Maximum-Net LLCUnclassifiedIPv4725
AS35297Dataline LLCUnclassifiedIPv4 IPv6495
AS6939Hurricane Electric LLCTransitIPv4431
AS201041Obltelecom LLCUnclassifiedIPv4305
AS35320Eurotranstelecom LtdUnclassifiedIPv4267
AS50263A-Systems Sp. z o.o.UnclassifiedIPv4217
AS45017"DOMINET" LLCUnclassifiedIPv4183
AS209548IrpenComunikaciaService LLCUnclassifiedIPv4183
AS41586Ukrainian Internet Company LLCUnclassifiedIPv4161

All 47 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.