Observed topology

AS47949 GSNETCZ gsnet.cz s.r.o.

Unclassified RIPE Cable/DSL/ISP

Upstreams 7 carry this network

Downstreams 1 this network carries

Adjacent (IPv4) 8

Adjacent (IPv6) 0

Upstream graph Who carries AS47949, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS47949 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS47949: 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.

AS	Network	Type	Families	Paths seen
AS174	Cogent Communications, LLC	Transit	IPv4	40
AS39392	SH.cz s.r.o.	Hosting	IPv4	13
AS1764	Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH	Unclassified	IPv4	1
AS20562	Broadband Hosting B.V.	Hosting	IPv4	1
AS24482	SG.GS	Hosting	IPv4	1
AS29504	Freenet Liberec, z.s.	Unclassified	IPv4	1
AS37721	Virtual Technologies & Solutions	Residential	IPv4	1

Transit

Downstream networks

inferred

Networks for which AS47949 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS60724	Sicuro Services s. r. o.	Unclassified	IPv4	58

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS47949 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS174	Cogent Communications, LLC	Transit	IPv4	80
AS60724	Sicuro Services s. r. o.	Unclassified	IPv4	58
AS39392	SH.cz s.r.o.	Hosting	IPv4	26
AS1764	Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH	Unclassified	IPv4	2
AS20562	Broadband Hosting B.V.	Hosting	IPv4	2
AS24482	SG.GS	Hosting	IPv4	2
AS29504	Freenet Liberec, z.s.	Unclassified	IPv4	2
AS37721	Virtual Technologies & Solutions	Residential	IPv4	2

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-04 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.33M 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.