asn.dev

Observed topology

AS18683 MWFN

Upstreams 3 carry this network
Downstreams 18 this network carries
Adjacent (IPv4) 23
Adjacent (IPv6) 6

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS18683: 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
AS2914NTT America, Inc.TransitIPv4 IPv6260
AS6939Hurricane Electric LLCTransitIPv4 IPv664
AS14907Wikimedia Foundation Inc.HostingIPv4 IPv66

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 AS18683 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS399663Kuehn NetworksUnclassifiedIPv4 IPv6257
AS22379Manifold Services IncUnclassifiedIPv4 IPv6244
AS39954Gateway Technical CollegeUnclassifiedIPv4236
AS22955Children's Hospital & Health System, Inc.UnclassifiedIPv4145
AS53355Concordia University WisconsinUnclassifiedIPv4118
AS40479Aurora Health Care, Inc.UnclassifiedIPv480
AS22401Potawatomi Bingo CasinoUnclassifiedIPv474
AS399411Froedtert South, Inc.UnclassifiedIPv463
AS46776EDUCATORS CREDIT UNIONUnclassifiedIPv459
AS46788Milwaukee County GovernmentUnclassifiedIPv459
AS402249Apogee Telecom Inc.UnclassifiedIPv458
AS32625OFFSITE, LLCUnclassifiedIPv4 IPv631
AS33442Zebra Technologies CorporationUnclassifiedIPv425
AS11586Johnson Outdoors, Inc.UnclassifiedIPv413
AS26907Johnson Financial Group, Inc.UnclassifiedIPv411
AS54978ZYWAVE INCUnclassifiedIPv48
AS33127Integrated Systems CorpUnclassifiedIPv46
AS53599Kenosha CountyUnclassifiedIPv41

Adjacency

Adjacent networks

29 shown

Every AS seen directly next to AS18683 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv4 IPv61,432
AS6939Hurricane Electric LLCTransitIPv4 IPv6360
AS399663Kuehn NetworksUnclassifiedIPv4 IPv6257
AS22379Manifold Services IncUnclassifiedIPv4 IPv6244
AS39954Gateway Technical CollegeUnclassifiedIPv4236
AS22955Children's Hospital & Health System, Inc.UnclassifiedIPv4145
AS53355Concordia University WisconsinUnclassifiedIPv4118
AS32625OFFSITE, LLCUnclassifiedIPv4 IPv6102
AS40479Aurora Health Care, Inc.UnclassifiedIPv480
AS22401Potawatomi Bingo CasinoUnclassifiedIPv474
AS399411Froedtert South, Inc.UnclassifiedIPv463
AS14907Wikimedia Foundation Inc.HostingIPv4 IPv661
AS46788Milwaukee County GovernmentUnclassifiedIPv459
AS46776EDUCATORS CREDIT UNIONUnclassifiedIPv459
AS402249Apogee Telecom Inc.UnclassifiedIPv458
AS174Cogent Communications, LLCTransitIPv447
AS33442Zebra Technologies CorporationUnclassifiedIPv425
AS11586Johnson Outdoors, Inc.UnclassifiedIPv413
AS19009OneClevelandUnclassifiedIPv411
AS26907Johnson Financial Group, Inc.UnclassifiedIPv411
AS54978ZYWAVE INCUnclassifiedIPv48
AS33127Integrated Systems CorpUnclassifiedIPv46
AS53599Kenosha CountyUnclassifiedIPv41

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 AS18683, 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
Equinix Internet Exchange ChicagoChicago, United States208.115.136.250280

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 2026-08-09 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.03M 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.