asn.dev

Observed topology

AS4181 TDS-AS - TDS TELECOM

Residential RIPE Cable/DSL/ISP

Upstreams 17 carry this network
Downstreams 41 this network carries
Adjacent (IPv4) 58
Adjacent (IPv6) 14
Upstream graph Who carries AS4181, and who carries them, drawn as a map up to the transit-free core. 10 exchanges Where AS4181 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 17

Networks observed carrying traffic for AS4181: 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 IPv62,481
AS6939Hurricane Electric LLCTransitIPv4 IPv6636
AS3257GTT Communications Inc.TransitIPv4 IPv6586
AS64289Macarne.comUnclassifiedIPv4455
AS9002RETN LimitedUnclassifiedIPv4 IPv6168
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv6163
AS852TELUS Communications Inc.ResidentialIPv4 IPv686
AS24482SG.GSHostingIPv4 IPv686
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv686
AS394256Tech Futures Interactive Inc.UnclassifiedIPv4 IPv686

All 17 upstreams →

Transit

Downstream networks

All 41

Networks for which AS4181 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS54519US Signal Company, L.L.C.UnclassifiedIPv4 IPv6527
AS395535Weiss InternetUnclassifiedIPv4407
AS396843Dean Health Plan, Inc.UnclassifiedIPv4275
AS396965Wildcard Corp.UnclassifiedIPv4 IPv6197
AS21896Alliant EnergyUnclassifiedIPv4140
AS23083Ironcore, Inc.UnclassifiedIPv4103
AS395086SC Data Center, Inc.UnclassifiedIPv499
AS14847Peck Servers, LLCHostingIPv4 IPv688
AS396145Exact Sciences CorporationUnclassifiedIPv478
AS47039National Guardian Life Insurance CompanyUnclassifiedIPv471

All 41 downstreams →

Adjacency

Adjacent networks

All 58

Every AS seen directly next to AS4181 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv64,233
AS3257GTT Communications Inc.TransitIPv4 IPv61,012
AS6939Hurricane Electric LLCTransitIPv4 IPv6955
AS54519US Signal Company, L.L.C.UnclassifiedIPv4 IPv6782
AS64289Macarne.comUnclassifiedIPv4456
AS395535Weiss InternetUnclassifiedIPv4407
AS396843Dean Health Plan, Inc.UnclassifiedIPv4275
AS9002RETN LimitedUnclassifiedIPv4 IPv6263
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv6259
AS396965Wildcard Corp.UnclassifiedIPv4 IPv6197

All 58 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-10 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 71.97M 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.