asn.dev

Observed topology

AS5432 PROXIMUS-ISP-AS

Upstreams 8 carry this network
Downstreams 1 this network carries
Adjacent (IPv4) 9
Adjacent (IPv6) 8

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS5432: 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
AS6774Belgacom International Carrier Services SAUnclassifiedIPv4 IPv63,114
AS3356Level 3 Parent, LLCTransitIPv4 IPv6890
AS6939Hurricane Electric LLCTransitIPv4 IPv6634
AS48185team.blue NVUnclassifiedIPv4 IPv684
AS3303Swisscom (Schweiz) AGResidentialIPv482
AS9002RETN LimitedUnclassifiedIPv4 IPv681
AS8218Zayo Infrastructure France SAUnclassifiedIPv480
AS6696VERIXI SAUnclassifiedIPv41

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 AS5432 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS5488Proximus NVUnclassifiedIPv4 IPv6932

Adjacency

Adjacent networks

17 shown

Every AS seen directly next to AS5432 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6774Belgacom International Carrier Services SAUnclassifiedIPv4 IPv65,507
AS5488Proximus NVUnclassifiedIPv4 IPv64,275
AS3356Level 3 Parent, LLCTransitIPv4 IPv62,048
AS6939Hurricane Electric LLCTransitIPv4 IPv61,106
AS48185team.blue NVUnclassifiedIPv4 IPv6152
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv6145
AS9002RETN LimitedUnclassifiedIPv4 IPv6144
AS8218Zayo Infrastructure France SAUnclassifiedIPv4134
AS6696VERIXI SAUnclassifiedIPv4 IPv65

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 AS5432, 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 1 exchange across 1 country and 1 region.

ExchangeLocationTheir addressMember ports
Belgian National Internet ExchangeBrussels, Belgium194.53.172.6382

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.