asn.dev

Observed topology

AS21500 TNS-AS Scientific Production Enterprise "Technaukservice" Ltd

Residential RIPE Cable/DSL/ISP

Upstreams 4 carry this network
Downstreams 10 this network carries
Adjacent (IPv4) 14
Adjacent (IPv6) 2
Upstream graph Who carries AS21500, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS21500 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS21500: 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
AS62206Pitline LtdUnclassifiedIPv4 IPv6734
AS3326PRIVATE JOINT STOCK COMPANY "DATAGROUP"ResidentialIPv4653
AS24482SG.GSHostingIPv421
AS6939Hurricane Electric LLCTransitIPv48

Transit

Downstream networks

inferred

Networks for which AS21500 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS21437Aviti ltd.UnclassifiedIPv4660
AS30790Ellipse ltd.UnclassifiedIPv4198
AS15800COORDINATOR LTDUnclassifiedIPv4 IPv6147
AS60455"ABC" UCRANIAN-FRANCH JOINT VENTUREUnclassifiedIPv496
AS31598TOV "OPTIK.NET"UnclassifiedIPv466
AS56851PE Skurykhin Mukola VolodumurovuchUnclassifiedIPv466
AS199263New Systems AM LTDUnclassifiedIPv466
AS24618Scientific Production Enterprise "Technaukservice" LtdUnclassifiedIPv465
AS20709Techinform LtdUnclassifiedIPv43
AS31187Ukrtechstroy LtdUnclassifiedIPv42

Adjacency

Adjacent networks

All 14

Every AS seen directly next to AS21500 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS62206Pitline LtdUnclassifiedIPv4 IPv61,570
AS3326PRIVATE JOINT STOCK COMPANY "DATAGROUP"ResidentialIPv41,167
AS21437Aviti ltd.UnclassifiedIPv4660
AS30790Ellipse ltd.UnclassifiedIPv4198
AS15800COORDINATOR LTDUnclassifiedIPv4 IPv6147
AS60455"ABC" UCRANIAN-FRANCH JOINT VENTUREUnclassifiedIPv496
AS31598TOV "OPTIK.NET"UnclassifiedIPv466
AS56851PE Skurykhin Mukola VolodumurovuchUnclassifiedIPv466
AS199263New Systems AM LTDUnclassifiedIPv466
AS24618Scientific Production Enterprise "Technaukservice" LtdUnclassifiedIPv465

All 14 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-02 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.44M 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.