asn.dev

Observed topology

AS205112 PHILUNET

Upstreams 26 carry this network
Downstreams 9 this network carries
Adjacent (IPv4) 30
Adjacent (IPv6) 22

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS205112: 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
AS50629LWLcom GmbHUnclassifiedIPv4 IPv6433
AS6939Hurricane Electric LLCTransitIPv4 IPv6138
AS13030Init7 (Switzerland) Ltd.HostingIPv4132
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv622
AS401753BIXCE IncUnclassifiedIPv4 IPv619
AS204092Association GRIFONUnclassifiedIPv4 IPv619
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv4 IPv619
AS56655Gigahost ASUnclassifiedIPv4 IPv619
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv619
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv619
AS24482SG.GSHostingIPv4 IPv619
AS48185team.blue NVUnclassifiedIPv4 IPv619
AS6696VERIXI SAUnclassifiedIPv412
AS12779IT.Gate S.p.A.UnclassifiedIPv412
AS49673Truenetwork LLCUnclassifiedIPv412
AS37100SEACOM LimitedUnclassifiedIPv412
AS57463NetIX Communications JSCUnclassifiedIPv412
AS12552GlobalConnect ABUnclassifiedIPv412
AS34800Securebit AGUnclassifiedIPv412
AS56662Marcin GondekUnclassifiedIPv67
AS58057Securebit AGUnclassifiedIPv67
AS29632Netassist International EOODUnclassifiedIPv62
AS42708Glesys ABUnclassifiedIPv61
AS1836green.ch AGResidentialIPv41
AS34549meerfarbig GmbH & Co. KGHostingIPv61
AS48362Stadtwerke FeldkirchResidentialIPv41

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 AS205112 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS15987Portunity GmbHHostingIPv4 IPv6911
AS57154Stadtwerke Konstanz GmbHResidentialIPv4 IPv6283
AS60123Stadtverwaltung RemscheidUnclassifiedIPv4124
AS210780Stadt WuppertalUnclassifiedIPv4 IPv697
AS48821Mauve Mailorder Software Verwaltung GmbHHostingIPv4 IPv690
AS202739Daniel CzerwonkUnclassifiedIPv618
AS206356Freifunk Essen e.V.UnclassifiedIPv4 IPv615
AS207160Factory Campus Verwaltungs-GmbHUnclassifiedIPv48
AS212567Freie Netze Muenchen e.V.UnclassifiedIPv43

Adjacency

Adjacent networks

52 shown

Every AS seen directly next to AS205112 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS50629LWLcom GmbHUnclassifiedIPv4 IPv61,206
AS15987Portunity GmbHHostingIPv4 IPv6911
AS13030Init7 (Switzerland) Ltd.HostingIPv4479
AS57154Stadtwerke Konstanz GmbHResidentialIPv4 IPv6387
AS6939Hurricane Electric LLCTransitIPv4 IPv6334
AS60123Stadtverwaltung RemscheidUnclassifiedIPv4124
AS210780Stadt WuppertalUnclassifiedIPv4 IPv697
AS48821Mauve Mailorder Software Verwaltung GmbHHostingIPv4 IPv690
AS401753BIXCE IncUnclassifiedIPv4 IPv660
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv4 IPv659
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv648
AS56655Gigahost ASUnclassifiedIPv4 IPv647
AS24482SG.GSHostingIPv4 IPv644
AS34800Securebit AGUnclassifiedIPv438
AS49673Truenetwork LLCUnclassifiedIPv434
AS37100SEACOM LimitedUnclassifiedIPv434
AS12779IT.Gate S.p.A.UnclassifiedIPv434
AS12552GlobalConnect ABUnclassifiedIPv432
AS57463NetIX Communications JSCUnclassifiedIPv431
AS56662Marcin GondekUnclassifiedIPv622
AS34019Hivane AssociationUnclassifiedIPv421
AS48185team.blue NVUnclassifiedIPv4 IPv619
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv619
AS204092Association GRIFONUnclassifiedIPv4 IPv619
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv619
AS202739Daniel CzerwonkUnclassifiedIPv618
AS58057Securebit AGUnclassifiedIPv617
AS206356Freifunk Essen e.V.UnclassifiedIPv4 IPv615
AS6696VERIXI SAUnclassifiedIPv412
AS207160Factory Campus Verwaltungs-GmbHUnclassifiedIPv48
AS212567Freie Netze Muenchen e.V.UnclassifiedIPv43
AS29632Netassist International EOODUnclassifiedIPv62
AS42708Glesys ABUnclassifiedIPv61
AS34549meerfarbig GmbH & Co. KGHostingIPv61
AS48362Stadtwerke FeldkirchResidentialIPv41
AS1836green.ch AGResidentialIPv41

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 AS205112, 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 10 exchanges across 3 countries and 1 region.

ExchangeLocationTheir addressMember ports
DE-CIX FrankfurtFrankfurt, Germany80.81.194.451,073
Neutral Internet ExchangeAmsterdam, Netherlands193.239.119.242665
KleyReX Internet ExchangeFrankfurt, Germany193.189.83.102475
DE-CIX DusseldorfDüsseldorf, Germany185.1.170.35226
Local Internet Exchange DüsseldorfDüsseldorf, Germany185.1.155.65214
DE-CIX MunichMunich, Germany185.1.208.45207
DE-CIX HamburgHamburg, Germany185.1.210.57195
Megaport Dusseldorf IXDüsseldorf, Germany194.146.118.16098
ERA-IX FrankfurtFrankfurt, Germany185.0.27.2183
CERN IXP / Equinix Internet Exchange GenevaGeneva, Switzerland192.65.185.12354

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.