asn.dev

Observed topology

AS33843 NEPUSTILNET-AS02

Upstreams 17 carry this network
Downstreams 5 this network carries
Adjacent (IPv4) 22
Adjacent (IPv6) 4

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS33843: 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
AS1299Arelion Sweden ABTransitIPv4 IPv6172
AS3320Deutsche Telekom AGMobileIPv4 IPv640
AS6939Hurricane Electric LLCTransitIPv428
AS34549meerfarbig GmbH & Co. KGHostingIPv416
AS33891Core-Backbone GmbHHostingIPv4 IPv610
AS34019Hivane AssociationUnclassifiedIPv44
AS12779IT.Gate S.p.A.UnclassifiedIPv44
AS17639Converge ICT Solutions Inc.UnclassifiedIPv44
AS24482SG.GSHostingIPv44
AS20485Joint Stock Company TransTeleComUnclassifiedIPv44
AS37100SEACOM LimitedUnclassifiedIPv44
AS57463NetIX Communications JSCUnclassifiedIPv44
AS12552GlobalConnect ABUnclassifiedIPv44
AS37721Virtual Technologies & SolutionsResidentialIPv44
AS1836green.ch AGResidentialIPv44
AS48362Stadtwerke FeldkirchResidentialIPv44
AS212024Marc SchmittUnclassifiedIPv44

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 AS33843 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS203546Naegele IT-Service GmbHUnclassifiedIPv461
AS206394CeGaT GmbHUnclassifiedIPv4 IPv649
AS198818ISP Service eGUnclassifiedIPv432
AS12502Dr.-Ing. Nepustil & Co. GmbH Internet Service Center Ingenieurgesellschaft fuer Systemsoftware und KommunikationstechnikResidentialIPv430
AS24766GBC GmbH Internet Service Center Ingenieurgesellschaft fuer Systemsoftware und KommunikationstechnikUnclassifiedIPv48

Adjacency

Adjacent networks

26 shown

Every AS seen directly next to AS33843 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv6192
AS3320Deutsche Telekom AGMobileIPv4 IPv697
AS34549meerfarbig GmbH & Co. KGHostingIPv467
AS12502Dr.-Ing. Nepustil & Co. GmbH Internet Service Center Ingenieurgesellschaft fuer Systemsoftware und KommunikationstechnikResidentialIPv466
AS203546Naegele IT-Service GmbHUnclassifiedIPv461
AS6939Hurricane Electric LLCTransitIPv451
AS206394CeGaT GmbHUnclassifiedIPv4 IPv649
AS198818ISP Service eGUnclassifiedIPv432
AS37721Virtual Technologies & SolutionsResidentialIPv420
AS48362Stadtwerke FeldkirchResidentialIPv419
AS33891Core-Backbone GmbHHostingIPv4 IPv612
AS212024Marc SchmittUnclassifiedIPv49
AS57463NetIX Communications JSCUnclassifiedIPv49
AS37100SEACOM LimitedUnclassifiedIPv48
AS12552GlobalConnect ABUnclassifiedIPv48
AS24482SG.GSHostingIPv48
AS24766GBC GmbH Internet Service Center Ingenieurgesellschaft fuer Systemsoftware und KommunikationstechnikUnclassifiedIPv48
AS20485Joint Stock Company TransTeleComUnclassifiedIPv47
AS1836green.ch AGResidentialIPv47
AS34019Hivane AssociationUnclassifiedIPv46
AS12779IT.Gate S.p.A.UnclassifiedIPv46
AS17639Converge ICT Solutions Inc.UnclassifiedIPv44

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 AS33843, 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 2 exchanges across 1 country and 1 region.

ExchangeLocationTheir addressMember ports
DE-CIX FrankfurtFrankfurt, Germany80.81.192.2191,073
Stuttgarter Internet ExchangeStuttgart, Germany193.138.31.237

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 2026-08-09 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.