asn.dev

Observed topology

AS15600 QUICKLINE Quickline AG

Residential RIPE

Upstreams 13 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 16
Adjacent (IPv6) 10
Upstream graph Who carries AS15600, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS15600 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 13

Networks observed carrying traffic for AS15600: 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 IPv61,239
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv61,203
AS6939Hurricane Electric LLCTransitIPv4 IPv61,111
AS174Cogent Communications, LLCTransitIPv4491
AS13335Cloudflare, Inc.HostingIPv4455
AS1836green.ch AGResidentialIPv4 IPv685
AS42708Glesys ABUnclassifiedIPv4 IPv685
AS12552GlobalConnect ABUnclassifiedIPv463
AS12779IT.Gate S.p.A.UnclassifiedIPv463
AS20764CJSC RASCOMUnclassifiedIPv463

All 13 upstreams →

Transit

Downstream networks

inferred

Networks for which AS15600 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS41872Quickline AGUnclassifiedIPv4 IPv6743
AS42346NorthC Schweiz AGUnclassifiedIPv4 IPv6226
AS8821WWZ Telekom AGResidentialIPv4 IPv6135

Adjacency

Adjacent networks

All 17

Every AS seen directly next to AS15600 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv62,164
AS1299Arelion Sweden ABTransitIPv4 IPv61,443
AS6939Hurricane Electric LLCTransitIPv4 IPv61,354
AS42346NorthC Schweiz AGUnclassifiedIPv4 IPv6782
AS41872Quickline AGUnclassifiedIPv4 IPv6747
AS174Cogent Communications, LLCTransitIPv4 IPv6694
AS13335Cloudflare, Inc.HostingIPv4455
AS8821WWZ Telekom AGResidentialIPv4 IPv6253
AS42708Glesys ABUnclassifiedIPv4 IPv6153
AS33891Core-Backbone GmbHHostingIPv4113

All 17 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-16 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.23M 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.