Observed topology
AS61955 COLOCATIONIX-AS
Transit
Upstream networks
Networks observed carrying traffic for AS61955: 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.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 202 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 126 |
| AS50629 | LWLcom GmbH | Unclassified | IPv4 IPv6 | 100 |
| AS9145 | EWE TEL GmbH | Residential | IPv4 | 81 |
| AS50304 | Blix Solutions AS | Unclassified | IPv4 IPv6 | 21 |
| AS48362 | Stadtwerke Feldkirch | Residential | IPv4 IPv6 | 15 |
| AS50300 | CustodianDC Limited | Unclassified | IPv4 IPv6 | 15 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 15 |
| AS3333 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | Unclassified | IPv4 IPv6 | 11 |
| AS48185 | team.blue NV | Unclassified | IPv4 IPv6 | 11 |
| AS34800 | Securebit AG | Unclassified | IPv4 | 9 |
| AS212024 | Marc Schmitt | Unclassified | IPv4 | 9 |
| AS20766 | Association "Gitoyen" | Unclassified | IPv4 | 9 |
| AS50628 | Leonix Telecom SAS | Unclassified | IPv4 | 9 |
| AS56655 | Gigahost AS | Unclassified | IPv4 | 9 |
| AS12779 | IT.Gate S.p.A. | Unclassified | IPv4 | 9 |
| AS4637 | Telstra Global | Unclassified | IPv4 | 9 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 | 9 |
| AS42708 | Glesys AB | Unclassified | IPv4 | 9 |
| AS29504 | Freenet Liberec, z.s. | Unclassified | IPv4 | 9 |
| AS8434 | Telenor Sverige AB | Residential | IPv4 | 9 |
| AS20485 | Joint Stock Company TransTeleCom | Unclassified | IPv4 | 9 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 | 9 |
| AS37100 | SEACOM Limited | Unclassified | IPv4 | 9 |
| AS3303 | Swisscom (Schweiz) AG | Residential | IPv4 | 9 |
| AS3741 | Dimension Data | Unclassified | IPv4 | 9 |
| AS57463 | NetIX Communications JSC | Unclassified | IPv4 | 9 |
| AS12552 | GlobalConnect AB | Unclassified | IPv4 | 9 |
| AS293 | ESnet | Unclassified | IPv4 | 9 |
| AS1836 | green.ch AG | Residential | IPv4 | 9 |
| AS213241 | TECHIT.BE SRL | Residential | IPv6 | 6 |
| AS13030 | Init7 (Switzerland) Ltd. | Hosting | IPv6 | 4 |
| AS34549 | meerfarbig GmbH & Co. KG | Hosting | IPv6 | 4 |
| AS9002 | RETN Limited | Unclassified | IPv6 | 4 |
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
Networks for which AS61955 was observed as the last hop before the origin, meaning it appears to provide them transit.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS31055 | Consultix GmbH | Unclassified | IPv4 | 1,353 |
| AS57137 | SIEVERS-SNC Beteiligungs GmbH | Unclassified | IPv4 IPv6 | 238 |
| AS204368 | Joerg Suenram trading as it NGO GmbH & Co. KG | Unclassified | IPv4 IPv6 | 237 |
| AS50905 | LAND-DATA Beteiligungs GmbH | Unclassified | IPv4 | 153 |
| AS44599 | Fabio Martin trading as FM-Datacenter GmbH & Co. KG | Unclassified | IPv4 | 153 |
| AS3337 | ColocationIX GmbH | Hosting | IPv4 | 115 |
Adjacency
Adjacent networks
Every AS seen directly next to AS61955 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS31055 | Consultix GmbH | Unclassified | IPv4 | 1,353 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 595 |
| AS50629 | LWLcom GmbH | Unclassified | IPv4 IPv6 | 568 |
| AS57137 | SIEVERS-SNC Beteiligungs GmbH | Unclassified | IPv4 IPv6 | 238 |
| AS204368 | Joerg Suenram trading as it NGO GmbH & Co. KG | Unclassified | IPv4 IPv6 | 237 |
| AS9145 | EWE TEL GmbH | Residential | IPv4 | 211 |
| AS50905 | LAND-DATA Beteiligungs GmbH | Unclassified | IPv4 | 153 |
| AS44599 | Fabio Martin trading as FM-Datacenter GmbH & Co. KG | Unclassified | IPv4 | 153 |
| AS50304 | Blix Solutions AS | Unclassified | IPv4 IPv6 | 141 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 126 |
| AS3337 | ColocationIX GmbH | Hosting | IPv4 | 115 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 66 |
| AS50300 | CustodianDC Limited | Unclassified | IPv4 IPv6 | 66 |
| AS48362 | Stadtwerke Feldkirch | Residential | IPv4 IPv6 | 61 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 IPv6 | 60 |
| AS3333 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | Unclassified | IPv4 IPv6 | 59 |
| AS42708 | Glesys AB | Unclassified | IPv4 | 55 |
| AS56655 | Gigahost AS | Unclassified | IPv4 | 55 |
| AS8434 | Telenor Sverige AB | Residential | IPv4 | 55 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 | 55 |
| AS20766 | Association "Gitoyen" | Unclassified | IPv4 | 55 |
| AS50628 | Leonix Telecom SAS | Unclassified | IPv4 | 55 |
| AS57463 | NetIX Communications JSC | Unclassified | IPv4 | 55 |
| AS37100 | SEACOM Limited | Unclassified | IPv4 | 55 |
| AS293 | ESnet | Unclassified | IPv4 | 55 |
| AS3303 | Swisscom (Schweiz) AG | Residential | IPv4 | 55 |
| AS3741 | Dimension Data | Unclassified | IPv4 | 55 |
| AS12552 | GlobalConnect AB | Unclassified | IPv4 | 55 |
| AS4637 | Telstra Global | Unclassified | IPv4 | 55 |
| AS20485 | Joint Stock Company TransTeleCom | Unclassified | IPv4 | 55 |
| AS1836 | green.ch AG | Residential | IPv4 | 55 |
| AS12779 | IT.Gate S.p.A. | Unclassified | IPv4 | 55 |
| AS34800 | Securebit AG | Unclassified | IPv4 | 55 |
| AS29504 | Freenet Liberec, z.s. | Unclassified | IPv4 | 55 |
| AS212024 | Marc Schmitt | Unclassified | IPv4 | 55 |
| AS213241 | TECHIT.BE SRL | Residential | IPv6 | 11 |
| AS48185 | team.blue NV | Unclassified | IPv4 IPv6 | 11 |
| AS13030 | Init7 (Switzerland) Ltd. | Hosting | IPv6 | 7 |
| AS9002 | RETN Limited | Unclassified | IPv6 | 7 |
| AS34549 | meerfarbig GmbH & Co. KG | Hosting | IPv6 | 7 |
| AS1103 | SURF B.V. | Unclassified | IPv6 | 3 |
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
Internet exchanges where Packet Clearing House has a port recorded for AS61955, 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 6 countries and 1 region.
| Exchange | Location | Their address | Member ports |
|---|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.192.153 | 1,073 |
| LINX LON1 | London, United Kingdom | 195.66.224.13 | 925 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.211.155 | 894 |
| France-IX Paris | Paris, France | 37.49.237.214 | 570 |
| Peering.cz | Prague, Czech Republic | 185.0.20.134 | 212 |
| DE-CIX Hamburg | Hamburg, Germany | 185.1.210.9 | 195 |
| ERA-IX Amsterdam | Amsterdam, Netherlands | 185.1.240.168 | 193 |
| Berlin Commercial Internet Exchange | Berlin, Germany | 193.178.185.127 | 152 |
| France-IX Marseille | Marseille, France | 37.49.232.88 | 127 |
| Netnod Sundsvall- Gävle | Sundsvall, Sweden | 194.68.128.46 | 18 |
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.