asn.dev

Observed topology

AS39545 FLUIDATA

Upstreams 7 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 15
Adjacent (IPv6) 4

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS39545: 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
AS4455IX Reach LtdUnclassifiedIPv4 IPv6143
AS3257GTT Communications Inc.TransitIPv4140
AS6939Hurricane Electric LLCTransitIPv4 IPv647
AS39326Syntura Group LimitedHostingIPv4 IPv639
AS31216BSO Network Solutions SASUnclassifiedIPv430
AS48185team.blue NVUnclassifiedIPv4 IPv66
AS37100SEACOM LimitedUnclassifiedIPv45

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 AS39545 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS21077Specialist Computer Centres PlcUnclassifiedIPv4756
AS50910Mainstream Digital LtdUnclassifiedIPv4682
AS205917Fluidone Ltd.UnclassifiedIPv4279
AS204239Abzorb Group LtdUnclassifiedIPv4252
AS210310Daisy Communications LtdUnclassifiedIPv4126
AS209329FOCUS 4 U LTDUnclassifiedIPv463
AS598164on LTDUnclassifiedIPv461

Adjacency

Adjacent networks

19 shown

Every AS seen directly next to AS39545 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS4455IX Reach LtdUnclassifiedIPv4 IPv61,051
AS21077Specialist Computer Centres PlcUnclassifiedIPv4756
AS3257GTT Communications Inc.TransitIPv4688
AS50910Mainstream Digital LtdUnclassifiedIPv4682
AS6939Hurricane Electric LLCTransitIPv4 IPv6310
AS39326Syntura Group LimitedHostingIPv4 IPv6281
AS205917Fluidone Ltd.UnclassifiedIPv4279
AS204239Abzorb Group LtdUnclassifiedIPv4252
AS31216BSO Network Solutions SASUnclassifiedIPv4216
AS210310Daisy Communications LtdUnclassifiedIPv4126
AS209329FOCUS 4 U LTDUnclassifiedIPv463
AS598164on LTDUnclassifiedIPv461
AS48185team.blue NVUnclassifiedIPv4 IPv642
AS37100SEACOM LimitedUnclassifiedIPv440
AS43531BSO Network Solutions SASUnclassifiedIPv41

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 AS39545, 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
LINX LON1London, United Kingdom195.66.225.84925
London Network Access PointLondon, United Kingdom5.57.80.76316

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.