asn.dev

Observed topology

AS215638 CILIX-LIMITED-AS

Upstreams 36 carry this network
Downstreams 18 this network carries
Adjacent (IPv4) 44
Adjacent (IPv6) 37

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS215638: 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 IPv6179
AS9002RETN LimitedUnclassifiedIPv4 IPv6108
AS6939Hurricane Electric LLCTransitIPv4 IPv6101
AS174Cogent Communications, LLCTransitIPv4 IPv662
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv648
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv621
AS50304Blix Solutions ASUnclassifiedIPv416
AS50673Serverius Holding B.V.UnclassifiedIPv416
AS24482SG.GSHostingIPv4 IPv615
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv615
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv615
AS48185team.blue NVUnclassifiedIPv4 IPv614
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv4 IPv614
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv614
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv613
AS29632Netassist International EOODUnclassifiedIPv612
AS212024Marc SchmittUnclassifiedIPv4 IPv610
AS37100SEACOM LimitedUnclassifiedIPv49
AS57463NetIX Communications JSCUnclassifiedIPv49
AS12552GlobalConnect ABUnclassifiedIPv49
AS49673Truenetwork LLCUnclassifiedIPv48
AS3741Dimension DataUnclassifiedIPv48
AS34927iFog GmbHHostingIPv47
AS20766Association "Gitoyen"UnclassifiedIPv47
AS293ESnetUnclassifiedIPv47
AS34019Hivane AssociationUnclassifiedIPv4 IPv67
AS56655Gigahost ASUnclassifiedIPv4 IPv67
AS56662Marcin GondekUnclassifiedIPv66
AS213241TECHIT.BE SRLResidentialIPv66
AS7575Australian Academic and Research Network (AARNet)EducationIPv44
AS33891Core-Backbone GmbHHostingIPv42
AS12779IT.Gate S.p.A.UnclassifiedIPv41
AS20485Joint Stock Company TransTeleComUnclassifiedIPv41
AS1836green.ch AGResidentialIPv41
AS12859BIT BVHostingIPv41
AS29075IELO-LIAZO SERVICES SASUnclassifiedIPv41

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 AS215638 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS213451Cilix LimitedUnclassifiedIPv4 IPv6280
AS209710SNRD NETWORKS LIMITEDHostingIPv659
AS202141Warren HallUnclassifiedIPv456
AS198276Jordan RobertUnclassifiedIPv653
AS204778Paul Nicholas LewisResidentialIPv4 IPv651
AS48070DSM (GB) LimitedHostingIPv4 IPv636
AS199327Gregoire CompagnonUnclassifiedIPv634
AS204208Peravix Group LTDUnclassifiedIPv4 IPv632
AS214420Conor LewisUnclassifiedIPv4 IPv627
AS213798Jude Gabriel PowellUnclassifiedIPv4 IPv621
AS214451Oliver ReidHostingIPv4 IPv615
AS209552Jan SirokyUnclassifiedIPv613
AS212635Jurrian van IerselUnclassifiedIPv4 IPv611
AS215332Lewis FosterUnclassifiedIPv66
AS214749James CahillUnclassifiedIPv64
AS212895Johannes ErnstUnclassifiedIPv4 IPv64
AS201616Theo HolroydUnclassifiedIPv62
AS214205Cristian Tudor MarcusUnclassifiedIPv62

Adjacency

Adjacent networks

81 shown

Every AS seen directly next to AS215638 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS9002RETN LimitedUnclassifiedIPv4 IPv6465
AS1299Arelion Sweden ABTransitIPv4 IPv6401
AS204208Peravix Group LTDUnclassifiedIPv4 IPv6375
AS213451Cilix LimitedUnclassifiedIPv4 IPv6280
AS6939Hurricane Electric LLCTransitIPv4 IPv6151
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6135
AS174Cogent Communications, LLCTransitIPv4 IPv6131
AS212895Johannes ErnstUnclassifiedIPv4 IPv699
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv4 IPv685
AS29632Netassist International EOODUnclassifiedIPv678
AS209710SNRD NETWORKS LIMITEDHostingIPv659
AS48070DSM (GB) LimitedHostingIPv4 IPv658
AS202141Warren HallUnclassifiedIPv456
AS198276Jordan RobertUnclassifiedIPv653
AS204778Paul Nicholas LewisResidentialIPv4 IPv651
AS50673Serverius Holding B.V.UnclassifiedIPv446
AS56662Marcin GondekUnclassifiedIPv643
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv641
AS50304Blix Solutions ASUnclassifiedIPv436
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv636
AS212635Jurrian van IerselUnclassifiedIPv4 IPv636
AS199327Gregoire CompagnonUnclassifiedIPv634
AS212024Marc SchmittUnclassifiedIPv4 IPv633
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv633
AS213241TECHIT.BE SRLResidentialIPv631
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv629
AS214420Conor LewisUnclassifiedIPv4 IPv627
AS214749James CahillUnclassifiedIPv4 IPv626
AS56655Gigahost ASUnclassifiedIPv4 IPv625
AS49673Truenetwork LLCUnclassifiedIPv424
AS7575Australian Academic and Research Network (AARNet)EducationIPv423
AS24482SG.GSHostingIPv4 IPv622
AS213798Jude Gabriel PowellUnclassifiedIPv4 IPv621
AS48185team.blue NVUnclassifiedIPv4 IPv619
AS219331Thomas BOUZINUnclassifiedIPv617
AS37100SEACOM LimitedUnclassifiedIPv417
AS3741Dimension DataUnclassifiedIPv415
AS12552GlobalConnect ABUnclassifiedIPv415
AS214451Oliver ReidHostingIPv4 IPv615
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv614
AS209552Jan SirokyUnclassifiedIPv613
AS57463NetIX Communications JSCUnclassifiedIPv413
AS34019Hivane AssociationUnclassifiedIPv4 IPv612
AS20766Association "Gitoyen"UnclassifiedIPv48
AS34927iFog GmbHHostingIPv48
AS293ESnetUnclassifiedIPv48
AS215332Lewis FosterUnclassifiedIPv66
AS33891Core-Backbone GmbHHostingIPv42
AS214205Cristian Tudor MarcusUnclassifiedIPv62
AS201616Theo HolroydUnclassifiedIPv62
AS12779IT.Gate S.p.A.UnclassifiedIPv41
AS1836green.ch AGResidentialIPv41
AS29075IELO-LIAZO SERVICES SASUnclassifiedIPv41
AS20485Joint Stock Company TransTeleComUnclassifiedIPv41
AS12859BIT BVHostingIPv41

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 AS215638, 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 4 exchanges across 3 countries and 1 region.

ExchangeLocationTheir addressMember ports
DE-CIX FrankfurtFrankfurt, Germany80.81.194.411,073
LINX LON1London, United Kingdom195.66.231.224925
AMS-IX AmsterdamAmsterdam, Netherlands80.249.214.243894
London Network Access PointLondon, United Kingdom5.57.82.180316

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.