Observed topology

AS15851 WASK-COM WROCMAN-COM non-educational part of WASK network, Wroclaw,Poland

Unclassified RIPE

Upstreams 3 carry this network

Downstreams 2 this network carries

Adjacent (IPv4) 5

Adjacent (IPv6) 2

Upstream graph Who carries AS15851, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS15851 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS15851: 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
AS196844	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center	Unclassified	IPv4 IPv6	84
AS13293	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center	Unclassified	IPv4 IPv6	63
AS35628	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center	Unclassified	IPv4	2

Transit

Downstream networks

inferred

Networks for which AS15851 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS210262	Miejskie Przedsiebiorstwo Wodociagow i Kanalizacji S.A.	Unclassified	IPv4	16
AS8970	Wroclaw Centre of Networking and Supercomputing	Education	IPv4	9

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS15851 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS196844	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center	Unclassified	IPv4 IPv6	108
AS13293	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center	Unclassified	IPv4 IPv6	64
AS210262	Miejskie Przedsiebiorstwo Wodociagow i Kanalizacji S.A.	Unclassified	IPv4	16
AS8970	Wroclaw Centre of Networking and Supercomputing	Education	IPv4	9
AS35628	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center	Unclassified	IPv4	2

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-18 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.