asn.dev

Observed topology

AS42 WOODYNET-1

Unclassified ARIN

Upstreams 117 carry this network
Downstreams 9 this network carries
Adjacent (IPv4) 115
Adjacent (IPv6) 64
Upstream graph Who carries AS42, and who carries them, drawn as a map up to the transit-free core. 352 exchanges Where AS42 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 117

Networks observed carrying traffic for AS42: 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 IPv66,603
AS2914NTT America, Inc.TransitIPv4 IPv61,341
AS3356Level 3 Parent, LLCTransitIPv4 IPv6849
AS1299Arelion Sweden ABTransitIPv4 IPv6719
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6304
AS24482SG.GSHostingIPv4 IPv6245
AS9002RETN LimitedUnclassifiedIPv4 IPv6223
AS22652Videotron LteeResidentialIPv4 IPv6204
AS1403EBOXResidentialIPv4 IPv6198
AS715WoodyNet, Inc.UnclassifiedIPv4182

All 117 upstreams →

Transit

Downstream networks

inferred

Networks for which AS42 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS187DNScastUnclassifiedIPv4 IPv61,751
AS715WoodyNet, Inc.UnclassifiedIPv4 IPv6838
AS19281Quad9HostingIPv4 IPv6200
AS10886University of MarylandEducationIPv4 IPv6107
AS398891Quad9UnclassifiedIPv4 IPv692
AS52304NIC ChileUnclassifiedIPv4 IPv671
AS52306NIC ChileUnclassifiedIPv4 IPv669
AS21556National Aeronautics and Space AdministrationUnclassifiedIPv4 IPv665
AS16668GBP Software, LLCUnclassifiedIPv4 IPv625

Adjacency

Adjacent networks

All 126

Every AS seen directly next to AS42 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv67,278
AS187DNScastUnclassifiedIPv4 IPv61,751
AS2914NTT America, Inc.TransitIPv4 IPv61,442
AS1299Arelion Sweden ABTransitIPv4 IPv61,077
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,037
AS715WoodyNet, Inc.UnclassifiedIPv4 IPv61,029
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6411
AS24482SG.GSHostingIPv4 IPv6300
AS9002RETN LimitedUnclassifiedIPv4 IPv6276
AS1403EBOXResidentialIPv4 IPv6270

All 126 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-14 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.25M 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.