asn.dev

Observed topology

AS3663 NETNET-NET - NetNet

Residential ARIN

Upstreams 4 carry this network
Downstreams 6 this network carries
Adjacent (IPv4) 10
Adjacent (IPv6) 5
Upstream graph Who carries AS3663, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS3663 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS3663: 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 IPv61,427
AS6461Zayo BandwidthTransitIPv4 IPv6995
AS174Cogent Communications, LLCTransitIPv4 IPv6608
AS24482SG.GSHostingIPv4 IPv647

Transit

Downstream networks

inferred

Networks for which AS3663 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS397463Washington Island Electric Cooperative, Inc.UnclassifiedIPv4 IPv6206
AS398370Northwoods ConnectUnclassifiedIPv4132
AS7268Athenet Internet ServicesUnclassifiedIPv4127
AS394660Chequamegon Communications Cooperative, Inc.UnclassifiedIPv4110
AS395091Plexus Corp.UnclassifiedIPv466
AS12081Greenheck FanUnclassifiedIPv450

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS3663 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv61,817
AS6461Zayo BandwidthTransitIPv4 IPv61,196
AS174Cogent Communications, LLCTransitIPv4 IPv6698
AS397463Washington Island Electric Cooperative, Inc.UnclassifiedIPv4 IPv6206
AS398370Northwoods ConnectUnclassifiedIPv4132
AS7268Athenet Internet ServicesUnclassifiedIPv4127
AS394660Chequamegon Communications Cooperative, Inc.UnclassifiedIPv4110
AS395091Plexus Corp.UnclassifiedIPv466
AS24482SG.GSHostingIPv4 IPv657
AS12081Greenheck FanUnclassifiedIPv450

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-03 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.45M 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.