asn.dev

Observed topology

AS209824 GS

Upstreams 9 carry this network
Downstreams 5 this network carries
Adjacent (IPv4) 12
Adjacent (IPv6) 5

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS209824: 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
AS33891Core-Backbone GmbHHostingIPv4 IPv6284
AS6939Hurricane Electric LLCTransitIPv4 IPv6168
AS41692OpenCarrier eGUnclassifiedIPv4124
AS174Cogent Communications, LLCTransitIPv4111
AS3320Deutsche Telekom AGMobileIPv451
AS5405Inter.link GmbHUnclassifiedIPv615
AS24482SG.GSHostingIPv4 IPv613
AS47263Jesse RoehslerUnclassifiedIPv412
AS20764CJSC RASCOMUnclassifiedIPv410

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.

Transit

Downstream networks

inferred

Networks for which AS209824 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS209480Smart Weblications GmbHUnclassifiedIPv4 IPv6221
AS203682Terrera AGUnclassifiedIPv4120
AS47263Jesse RoehslerUnclassifiedIPv461
AS215218Terrera AGUnclassifiedIPv461
AS31572Photonium NetSolutions GmbHUnclassifiedIPv458

Adjacency

Adjacent networks

18 shown

Every AS seen directly next to AS209824 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS33891Core-Backbone GmbHHostingIPv4 IPv6487
AS6939Hurricane Electric LLCTransitIPv4 IPv6254
AS41692OpenCarrier eGUnclassifiedIPv4225
AS209480Smart Weblications GmbHUnclassifiedIPv4 IPv6221
AS174Cogent Communications, LLCTransitIPv4194
AS203682Terrera AGUnclassifiedIPv4120
AS3320Deutsche Telekom AGMobileIPv487
AS47263Jesse RoehslerUnclassifiedIPv475
AS215218Terrera AGUnclassifiedIPv461
AS31572Photonium NetSolutions GmbHUnclassifiedIPv458
AS5405Inter.link GmbHUnclassifiedIPv620
AS24482SG.GSHostingIPv4 IPv616
AS20764CJSC RASCOMUnclassifiedIPv412

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.

Interconnection

Exchange presence

recorded

Internet exchanges where Packet Clearing House has a port recorded for AS209824, largest fabric first. An exchange is shared switching where networks interconnect directly rather than paying a transit provider to carry traffic between them, so turning up at one is a deliberate choice about how this network wants to be reached. Each name opens that exchange's own page, with its peering LANs and every other network recorded on it. Recorded at 1 exchange across 1 country and 1 region.

ExchangeLocationTheir addressMember ports
ERA-IX FrankfurtFrankfurt, Germany185.0.27.2683

Unlike the tables above, this is recorded rather than inferred. An address on a peering LAN is at that exchange by definition. Two carve-outs all the same. Member ports counts every participant at the exchange, not this network's ports, so read it as a size proxy. And an absent exchange means PCH has no record of it, not that the network is not there.

Provenance

Where this comes from

Derived from routing tables collected at 2026-08-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.02M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.

Exchange presence comes from a separate dataset: the directory collected 2026-08-08 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,137 recorded member ports, licensed CC BY-NC-SA 3.0.

PeeringDB is the better-known directory and is deliberately not the source here: its acceptable-use policy forbids the bulk storage this needs. The two answer different questions anyway. PeeringDB reports what an operator declares about itself; this reports what PCH has recorded.