asn.dev

Observed topology

AS13119 ACI-COM-AS Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, Akademickie Centrum Informatyki

Unclassified RIPE

Upstreams 25 carry this network
Downstreams 14 this network carries
Adjacent (IPv4) 39
Adjacent (IPv6) 7
Upstream graph Who carries AS13119, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS13119 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 25

Networks observed carrying traffic for AS13119: 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
AS13293Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterUnclassifiedIPv4 IPv6248
AS196844Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterUnclassifiedIPv4 IPv6210
AS174Cogent Communications, LLCTransitIPv4183
AS9002RETN LimitedUnclassifiedIPv4 IPv6146
AS50673Serverius Holding B.V.UnclassifiedIPv424
AS5617Orange Polska Spolka AkcyjnaMobileIPv417
AS29504Freenet Liberec, z.s.UnclassifiedIPv417
AS24482SG.GSHostingIPv4 IPv613
AS293ESnetUnclassifiedIPv412
AS3216PJSC "Vimpelcom"MobileIPv412

All 25 upstreams →

Transit

Downstream networks

All 14

Networks for which AS13119 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS204444LanTech Piotr PilekUnclassifiedIPv4 IPv6248
AS199296Maciej Wasiuta trading as VIRTUAL SPACEUnclassifiedIPv4150
AS211025OPTO-TECH GRZEGORZ WROBLEWSKIUnclassifiedIPv4128
AS44061SAT-MONT-SERVICE JACEK MRUK, KRZYSZTOF MRUK Sp. z o.o.UnclassifiedIPv4122
AS43803Speedmedia Sp z o.o.UnclassifiedIPv487
AS204190Gmina Miasto SzczecinUnclassifiedIPv466
AS197217Shentel Sp. z o.o.UnclassifiedIPv460
AS60323Technologiczny Sp. z o.o.UnclassifiedIPv4 IPv657
AS60565Wojewodzka Stacja Pogotowia Ratunkowego SzczecinUnclassifiedIPv448
AS199855WOJEWODZTWO ZACHODNIOPOMORSKIEUnclassifiedIPv442

All 14 downstreams →

Adjacency

Adjacent networks

All 40

Every AS seen directly next to AS13119 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS174Cogent Communications, LLCTransitIPv4605
AS196844Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterUnclassifiedIPv4 IPv6449
AS13293Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterUnclassifiedIPv4 IPv6330
AS204444LanTech Piotr PilekUnclassifiedIPv4 IPv6248
AS9002RETN LimitedUnclassifiedIPv4 IPv6222
AS199296Maciej Wasiuta trading as VIRTUAL SPACEUnclassifiedIPv4150
AS211025OPTO-TECH GRZEGORZ WROBLEWSKIUnclassifiedIPv4128
AS44061SAT-MONT-SERVICE JACEK MRUK, KRZYSZTOF MRUK Sp. z o.o.UnclassifiedIPv4122
AS43803Speedmedia Sp z o.o.UnclassifiedIPv487
AS204190Gmina Miasto SzczecinUnclassifiedIPv466

All 40 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M 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.