asn.dev

Observed topology

AS205755 SDNBUCKS

Upstreams 21 carry this network
Downstreams 0 this network carries
Adjacent (IPv4) 16
Adjacent (IPv6) 13

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS205755: 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
AS41051Openfactory GmbH in LiquidationUnclassifiedIPv4 IPv6157
AS20562Broadband Hosting B.V.HostingIPv436
AS24785Broadband Hosting B.V.HostingIPv4 IPv632
AS57866Fusix Networks B.V.UnclassifiedIPv416
AS58057Securebit AGUnclassifiedIPv4 IPv66
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv65
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv65
AS24482SG.GSHostingIPv4 IPv65
AS48185team.blue NVUnclassifiedIPv4 IPv65
AS204092Association GRIFONUnclassifiedIPv4 IPv65
AS4913410VPN Research Network LTDUnclassifiedIPv44
AS20485Joint Stock Company TransTeleComUnclassifiedIPv44
AS37100SEACOM LimitedUnclassifiedIPv44
AS37721Virtual Technologies & SolutionsResidentialIPv44
AS202365Omer GOLGELIUnclassifiedIPv44
AS212508Lowhosting services of Davide GennariUnclassifiedIPv44
AS29632Netassist International EOODUnclassifiedIPv62
AS205794JINZE YANGUnclassifiedIPv61
AS17639Converge ICT Solutions Inc.UnclassifiedIPv61
AS213241TECHIT.BE SRLResidentialIPv61
AS48362Stadtwerke FeldkirchResidentialIPv61

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 AS205755 was observed as the last hop before the origin, meaning it appears to provide them transit.

No downstream observed. This network does not appear to carry transit for anyone.

Adjacency

Adjacent networks

29 shown

Every AS seen directly next to AS205755 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS41051Openfactory GmbH in LiquidationUnclassifiedIPv4 IPv6157
AS20562Broadband Hosting B.V.HostingIPv436
AS24785Broadband Hosting B.V.HostingIPv4 IPv632
AS57866Fusix Networks B.V.UnclassifiedIPv416
AS58057Securebit AGUnclassifiedIPv4 IPv66
AS48185team.blue NVUnclassifiedIPv4 IPv65
AS24482SG.GSHostingIPv4 IPv65
AS204092Association GRIFONUnclassifiedIPv4 IPv65
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv65
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv65
AS20485Joint Stock Company TransTeleComUnclassifiedIPv44
AS37721Virtual Technologies & SolutionsResidentialIPv44
AS4913410VPN Research Network LTDUnclassifiedIPv44
AS202365Omer GOLGELIUnclassifiedIPv44
AS212508Lowhosting services of Davide GennariUnclassifiedIPv44
AS37100SEACOM LimitedUnclassifiedIPv44
AS29632Netassist International EOODUnclassifiedIPv62
AS17639Converge ICT Solutions Inc.UnclassifiedIPv61
AS213241TECHIT.BE SRLResidentialIPv61
AS205794JINZE YANGUnclassifiedIPv61
AS48362Stadtwerke FeldkirchResidentialIPv61

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 AS205755, 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 6 exchanges across 2 countries and 1 region.

ExchangeLocationTheir addressMember ports
AMS-IX AmsterdamAmsterdam, Netherlands80.249.209.30894
Neutral Internet ExchangeAmsterdam, Netherlands2001:7f8:13::a520:5755:1665
Speed Internet ExchangeDronten, Netherlands185.1.222.26292
Nine IXParis, France185.1.14.126149
EuroGIX retiredStrasbourg, France185.1.14.126129
LayerSwitch Internet ExchangeThe Hague, Netherlands185.1.32.100105

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 2026-08-09 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.03M 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 2026-08-09 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,164 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.