Observed topology

AS30851 SILEMAN-RUDASL-AS

Unclassified RIPE NSP

Upstreams 4 carry this network

Downstreams 10 this network carries

Adjacent (IPv4) 14

Adjacent (IPv6) 0

Upstream graph Who carries AS30851, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS30851 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS30851: 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
AS12741	Netia SA	Residential	IPv4	719
AS15694	Atman Sp. z o.o.	Residential	IPv4	510
AS12912	T-Mobile Polska S.A.	Unclassified	IPv4	489
AS24482	SG.GS	Hosting	IPv4	30

Transit

Downstream networks

inferred

Networks for which AS30851 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS43837	Lukasz Pelka trading as VEGA	Unclassified	IPv4	417
AS51769	Elwico s.c.	Unclassified	IPv4	120
AS197187	IntraCOM.pl S.C. Grzegorz Lemantowicz, Artur Molski	Unclassified	IPv4	61
AS201451	ARCOMP Adam Rosik	Unclassified	IPv4	60
AS24578	Slaski Inkubator Przedsiebiorczosci Sp. z o.o.	Unclassified	IPv4	59
AS43929	ASN Sp. z o.o.	Unclassified	IPv4	59
AS199965	BETA-COM Sp. z o.o.	Unclassified	IPv4	8
AS51931	ARPNET WOJCIECH CHODACKI	Residential	IPv4	4
AS59990	Netrunner Anna Polak	Residential	IPv4	4
AS60189	WEGLOKOKS S.A.	Unclassified	IPv4	4

Adjacency

Adjacent networks

All 14

Every AS seen directly next to AS30851 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS12741	Netia SA	Residential	IPv4	874
AS12912	T-Mobile Polska S.A.	Unclassified	IPv4	821
AS15694	Atman Sp. z o.o.	Residential	IPv4	806
AS43837	Lukasz Pelka trading as VEGA	Unclassified	IPv4	417
AS51769	Elwico s.c.	Unclassified	IPv4	120
AS197187	IntraCOM.pl S.C. Grzegorz Lemantowicz, Artur Molski	Unclassified	IPv4	61
AS201451	ARCOMP Adam Rosik	Unclassified	IPv4	60
AS24578	Slaski Inkubator Przedsiebiorczosci Sp. z o.o.	Unclassified	IPv4	59
AS43929	ASN Sp. z o.o.	Unclassified	IPv4	59
AS24482	SG.GS	Hosting	IPv4	43

All 14 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-11 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.47M 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.