asn.dev

Observed topology

AS203446 AS203446 - SMARTNET LIMITED

Unclassified RIPE

Upstreams 27 carry this network
Downstreams 25 this network carries
Adjacent (IPv4) 54
Adjacent (IPv6) 39
Upstream graph Who carries AS203446, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS203446 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 27

Networks observed carrying traffic for AS203446: 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
AS3257GTT Communications Inc.TransitIPv4 IPv6257
AS6461Zayo BandwidthTransitIPv4 IPv6255
AS174Cogent Communications, LLCTransitIPv4 IPv6176
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4 IPv692
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv661
AS6939Hurricane Electric LLCTransitIPv647
AS5511Orange S.A.TransitIPv4 IPv645
AS24482SG.GSHostingIPv4 IPv622
AS34019Hivane AssociationUnclassifiedIPv4 IPv622
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv622

All 27 upstreams →

Transit

Downstream networks

All 25

Networks for which AS203446 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS58087Florian KolbUnclassifiedIPv4 IPv62,057
AS215730FZCOUnclassifiedIPv4 IPv6711
AS400992ZhouyiSat CommunicationsUnclassifiedIPv4 IPv6646
AS403005BlatantUnclassifiedIPv4535
AS213905ISPLABS LIMITEDUnclassifiedIPv4 IPv6353
AS401626Netiface America, Inc.HostingIPv4 IPv6272
AS214243Marc FischerUnclassifiedIPv4 IPv6252
AS207252Felix GassanUnclassifiedIPv4 IPv6225
AS208226Ouiheberg SARLUnclassifiedIPv4 IPv6213
AS214279DASABO OUHostingIPv4 IPv6195

All 25 downstreams →

Adjacency

Adjacent networks

All 60

Every AS seen directly next to AS203446 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3257GTT Communications Inc.TransitIPv4 IPv62,391
AS58087Florian KolbUnclassifiedIPv4 IPv62,363
AS6461Zayo BandwidthTransitIPv4 IPv62,012
AS174Cogent Communications, LLCTransitIPv4 IPv61,524
AS400992ZhouyiSat CommunicationsUnclassifiedIPv4 IPv61,218
AS215730FZCOUnclassifiedIPv4 IPv61,054
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4 IPv6988
AS19721391TELECOM LTDUnclassifiedIPv4 IPv6862
AS5511Orange S.A.TransitIPv4 IPv6851
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6612

All 60 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-25 12:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.