asn.dev

Observed topology

AS1820 WNET

Residential ARIN NSP

Upstreams 37 carry this network
Downstreams 108 this network carries
Adjacent (IPv4) 148
Adjacent (IPv6) 41
Upstream graph Who carries AS1820, and who carries them, drawn as a map up to the transit-free core. 23 exchanges Where AS1820 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 37

Networks observed carrying traffic for AS1820: 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
AS1299Arelion Sweden ABTransitIPv4 IPv61,207
AS6939Hurricane Electric LLCTransitIPv4 IPv6221
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6124
AS1273IDDQD-ASBusinessIPv4 IPv652
AS24482SG.GSHostingIPv4 IPv646
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv646
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv643
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv643
AS48185team.blue NVUnclassifiedIPv4 IPv643
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv643

All 37 upstreams →

Transit

Downstream networks

All 108

Networks for which AS1820 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS24685Load.me sp. z o. o.UnclassifiedIPv41,441
AS31077LLC Universalna Merezheva KompaniyaUnclassifiedIPv41,426
AS30886PP KOM i TEXUnclassifiedIPv4 IPv6887
AS42396PJSC Telesystems of UkraineUnclassifiedIPv4815
AS25071RadioCom LtdUnclassifiedIPv4752
AS42512X-COM LLCUnclassifiedIPv4510
AS56485TheHost LLCHostingIPv4 IPv6484
AS3236SERVER.UA LLCHostingIPv4 IPv6336
AS28994Sitel LtdUnclassifiedIPv4 IPv6310
AS31035ADVAIX TELECOM LLCUnclassifiedIPv4310

All 108 downstreams →

Adjacency

Adjacent networks

All 153

Every AS seen directly next to AS1820 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv65,227
AS24685Load.me sp. z o. o.UnclassifiedIPv41,441
AS31077LLC Universalna Merezheva KompaniyaUnclassifiedIPv41,426
AS1273IDDQD-ASBusinessIPv4 IPv61,357
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv61,208
AS30886PP KOM i TEXUnclassifiedIPv4 IPv6974
AS6939Hurricane Electric LLCTransitIPv4 IPv6917
AS42396PJSC Telesystems of UkraineUnclassifiedIPv4860
AS25071RadioCom LtdUnclassifiedIPv4752
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv6642

All 153 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-30 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.49M 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.