asn.dev

Observed topology

AS20853 ETOP-AS

Unclassified RIPE

Upstreams 17 carry this network
Downstreams 15 this network carries
Adjacent (IPv4) 37
Adjacent (IPv6) 17
Upstream graph Who carries AS20853, and who carries them, drawn as a map up to the transit-free core. 5 exchanges Where AS20853 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 17

Networks observed carrying traffic for AS20853: 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 IPv6886
AS2914NTT America, Inc.TransitIPv4 IPv6614
AS3356Level 3 Parent, LLCTransitIPv4 IPv6444
AS174Cogent Communications, LLCTransitIPv4 IPv6413
AS6939Hurricane Electric LLCTransitIPv4 IPv6379
AS24482SG.GSHostingIPv4 IPv649
AS33891Core-Backbone GmbHHostingIPv440
AS29632Netassist International EOODUnclassifiedIPv64
AS34549meerfarbig GmbH & Co. KGHostingIPv64
AS1836green.ch AGResidentialIPv62

All 17 upstreams →

Transit

Downstream networks

All 15

Networks for which AS20853 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS201434CITYSTRADA S.A.UnclassifiedIPv4 IPv6311
AS203266SoftBlue S.A.UnclassifiedIPv4120
AS199831Citimedia.pl Sp z o.o.UnclassifiedIPv486
AS41959PLJ TELECOM sp. z o.o.ResidentialIPv466
AS41188BIOTON S.AUnclassifiedIPv460
AS214487WEDEPLOY Piotr ChrostekUnclassifiedIPv460
AS35337ACTION S.A.UnclassifiedIPv444
AS8962CENTRUM OBSLUGI ADMINISTRACJI RZADOWEJ INSTYTUCJA GOSPODARKI BUDZETOWEJUnclassifiedIPv439
AS31431INTER CARS S.A.UnclassifiedIPv423
AS197459Przedsiebiorstwo Panstwowe Porty LotniczeUnclassifiedIPv421

All 15 downstreams →

Adjacency

Adjacent networks

All 40

Every AS seen directly next to AS20853 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv61,120
AS2914NTT America, Inc.TransitIPv4 IPv6859
AS3356Level 3 Parent, LLCTransitIPv4 IPv6709
AS201434CITYSTRADA S.A.UnclassifiedIPv4 IPv6699
AS6939Hurricane Electric LLCTransitIPv4 IPv6577
AS174Cogent Communications, LLCTransitIPv4 IPv6543
AS199831Citimedia.pl Sp z o.o.UnclassifiedIPv4156
AS203266SoftBlue S.A.UnclassifiedIPv4120
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv675
AS41959PLJ TELECOM sp. z o.o.ResidentialIPv466

All 40 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-31 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.50M 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.