asn.dev

Observed topology

AS51043 Aspire Technology Solutions

Upstreams 22 carry this network
Downstreams 8 this network carries
Adjacent (IPv4) 29
Adjacent (IPv6) 20

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS51043: 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 IPv6318
AS174Cogent Communications, LLCTransitIPv4 IPv6222
AS2914NTT America, Inc.TransitIPv4 IPv6200
AS6939Hurricane Electric LLCTransitIPv4 IPv6166
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv687
AS50304Blix Solutions ASUnclassifiedIPv442
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv623
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv622
AS29075IELO-LIAZO SERVICES SASUnclassifiedIPv4 IPv622
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv622
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv622
AS24482SG.GSHostingIPv4 IPv622
AS48185team.blue NVUnclassifiedIPv4 IPv622
AS12779IT.Gate S.p.A.UnclassifiedIPv421
AS37100SEACOM LimitedUnclassifiedIPv421
AS3741Dimension DataUnclassifiedIPv421
AS57463NetIX Communications JSCUnclassifiedIPv421
AS12552GlobalConnect ABUnclassifiedIPv421
AS3216PJSC "Vimpelcom"MobileIPv421
AS7575Australian Academic and Research Network (AARNet)EducationIPv417
AS9002RETN LimitedUnclassifiedIPv62
AS213241TECHIT.BE SRLResidentialIPv61

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 AS51043 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS203185PEBBLETREE LTDUnclassifiedIPv4 IPv6215
AS207925Squirrel Internet LtdUnclassifiedIPv4 IPv6129
AS216207Newcastle City CouncilUnclassifiedIPv4112
AS205389Zoom Internet LtdResidentialIPv4 IPv695
AS201528Orchid Cellmark LtdUnclassifiedIPv4 IPv688
AS207089IT Systems & Support LimitedUnclassifiedIPv4 IPv665
AS208118N.I Technology Ltd.UnclassifiedIPv461
AS201529Orchid Cellmark LtdUnclassifiedIPv444

Adjacency

Adjacent networks

49 shown

Every AS seen directly next to AS51043 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv6467
AS174Cogent Communications, LLCTransitIPv4 IPv6414
AS6939Hurricane Electric LLCTransitIPv4 IPv6296
AS2914NTT America, Inc.TransitIPv4 IPv6294
AS203185PEBBLETREE LTDUnclassifiedIPv4 IPv6215
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6129
AS207925Squirrel Internet LtdUnclassifiedIPv4 IPv6129
AS216207Newcastle City CouncilUnclassifiedIPv4112
AS205389Zoom Internet LtdResidentialIPv4 IPv695
AS201528Orchid Cellmark LtdUnclassifiedIPv4 IPv694
AS207089IT Systems & Support LimitedUnclassifiedIPv4 IPv665
AS208118N.I Technology Ltd.UnclassifiedIPv461
AS50304Blix Solutions ASUnclassifiedIPv460
AS201529Orchid Cellmark LtdUnclassifiedIPv444
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv638
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv636
AS24482SG.GSHostingIPv4 IPv636
AS29075IELO-LIAZO SERVICES SASUnclassifiedIPv4 IPv636
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv636
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv634
AS12552GlobalConnect ABUnclassifiedIPv432
AS57463NetIX Communications JSCUnclassifiedIPv430
AS37100SEACOM LimitedUnclassifiedIPv430
AS3741Dimension DataUnclassifiedIPv430
AS3216PJSC "Vimpelcom"MobileIPv430
AS12779IT.Gate S.p.A.UnclassifiedIPv430
AS48185team.blue NVUnclassifiedIPv4 IPv630
AS7575Australian Academic and Research Network (AARNet)EducationIPv426
AS6461Zayo BandwidthTransitIPv4 IPv619
AS9002RETN LimitedUnclassifiedIPv612
AS213241TECHIT.BE SRLResidentialIPv66

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 AS51043, 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 5 exchanges across 1 country and 1 region.

ExchangeLocationTheir addressMember ports
LINX LON1London, United Kingdom195.66.226.200925
London Network Access PointLondon, United Kingdom5.57.81.91316
LINX ManchesterManchester, United Kingdom195.66.244.89145
Leeds Internet ExchangeLeeds, United Kingdom91.217.231.4722
LINX ScotlandScotland, United Kingdom195.66.246.414

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.