asn.dev

Observed topology

AS8821 TELEZUG WWZ Telekom AG TELEZUG

Residential RIPE Cable/DSL/ISP

Upstreams 27 carry this network
Downstreams 5 this network carries
Adjacent (IPv4) 30
Adjacent (IPv6) 19
Upstream graph Who carries AS8821, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS8821 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 27

Networks observed carrying traffic for AS8821: 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 IPv6181
AS15600Quickline AGResidentialIPv4 IPv6171
AS6939Hurricane Electric LLCTransitIPv4 IPv6120
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv630
AS24482SG.GSHostingIPv4 IPv612
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv612
AS212024Marc SchmittUnclassifiedIPv4 IPv612
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv611
AS48185team.blue NVUnclassifiedIPv4 IPv611
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv611

All 27 upstreams →

Transit

Downstream networks

inferred

Networks for which AS8821 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS35518sasag Kabelkommunikation AGResidentialIPv4 IPv6201
AS41294Zuger KantonalbankUnclassifiedIPv4 IPv666
AS202240Innflow AGUnclassifiedIPv4 IPv654
AS12750SOFTEC AGUnclassifiedIPv4 IPv652
AS208950Ezpada s.r.oUnclassifiedIPv413

Adjacency

Adjacent networks

All 33

Every AS seen directly next to AS8821 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS15600Quickline AGResidentialIPv4 IPv6289
AS1299Arelion Sweden ABTransitIPv4 IPv6228
AS35518sasag Kabelkommunikation AGResidentialIPv4 IPv6227
AS6939Hurricane Electric LLCTransitIPv4 IPv6202
AS41294Zuger KantonalbankUnclassifiedIPv4 IPv666
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv662
AS202240Innflow AGUnclassifiedIPv4 IPv654
AS12750SOFTEC AGUnclassifiedIPv4 IPv652
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv629
AS6730Sunrise GmbHMobileIPv426

All 33 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-28 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.21M 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.