asn.dev

Observed topology

AS13855 CFU-NET - The Municipal Communications Utility of the City of Cedar Falls, Iowa

Residential ARIN Cable/DSL/ISP

Upstreams 4 carry this network
Downstreams 12 this network carries
Adjacent (IPv4) 17
Adjacent (IPv6) 9
Upstream graph Who carries AS13855, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS13855 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS13855: 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
AS6939Hurricane Electric LLCTransitIPv4 IPv6411
AS174Cogent Communications, LLCTransitIPv4 IPv6197
AS1299Arelion Sweden ABTransitIPv4 IPv666
AS24482SG.GSHostingIPv4 IPv611

Transit

Downstream networks

All 12

Networks for which AS13855 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS22594University of Northern IowaUnclassifiedIPv4374
AS400080Grundy Center Municipal UtilitiesUnclassifiedIPv4354
AS397790Indianola Municipal UtilitiesUnclassifiedIPv4 IPv6294
AS33029Osage Municipal Communications UtilityUnclassifiedIPv4 IPv6232
AS400528City of PellaUnclassifiedIPv4 IPv6229
AS393514New Hampton Municipal Light PlantUnclassifiedIPv4194
AS400132Reinbeck Telecommunications UtilityUnclassifiedIPv4180
AS400358TOTALDATALOSS LLCUnclassifiedIPv4 IPv699
AS17313THE CBE GROUP, INCUnclassifiedIPv459
AS18827ForbinUnclassifiedIPv449

All 12 downstreams →

Adjacency

Adjacent networks

All 17

Every AS seen directly next to AS13855 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv62,186
AS1299Arelion Sweden ABTransitIPv4 IPv6573
AS400528City of PellaUnclassifiedIPv4 IPv6522
AS174Cogent Communications, LLCTransitIPv4 IPv6441
AS22594University of Northern IowaUnclassifiedIPv4374
AS397790Indianola Municipal UtilitiesUnclassifiedIPv4 IPv6359
AS400080Grundy Center Municipal UtilitiesUnclassifiedIPv4354
AS33029Osage Municipal Communications UtilityUnclassifiedIPv4 IPv6232
AS393514New Hampton Municipal Light PlantUnclassifiedIPv4194
AS400132Reinbeck Telecommunications UtilityUnclassifiedIPv4180

All 17 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

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. 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.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.