asn.dev

Observed topology

AS24971 MASTER-AS Czech Republic www.master.cz

Hosting RIPE

Upstreams 9 carry this network
Downstreams 8 this network carries
Adjacent (IPv4) 18
Adjacent (IPv6) 12
Upstream graph Who carries AS24971, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS24971 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS24971: 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
AS1299Arelion Sweden ABTransitIPv4 IPv6971
AS9002RETN LimitedUnclassifiedIPv4 IPv6762
AS6939Hurricane Electric LLCTransitIPv4 IPv6439
AS24482SG.GSHostingIPv4 IPv646
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv646
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv646
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbHUnclassifiedIPv433
AS33891Core-Backbone GmbHHostingIPv433
AS8218Zayo Infrastructure France SAUnclassifiedIPv613

Transit

Downstream networks

inferred

Networks for which AS24971 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS204957ROUTE 95 LLCUnclassifiedIPv4 IPv6423
AS207167mapnet IT services s.r.o.UnclassifiedIPv4 IPv6234
AS51134Development 777 s.r.o.UnclassifiedIPv4 IPv6190
AS211085mapnet IT services s.r.o.UnclassifiedIPv4 IPv6127
AS21045K-net Technical International Group, s.r.o.UnclassifiedIPv459
AS64481Joint Venture Dragon Capital LLCUnclassifiedIPv459
AS202857INIZIO Internet Media s.r.o.UnclassifiedIPv459
AS48921Yoursafe Holding B.V.UnclassifiedIPv4 IPv653

Adjacency

Adjacent networks

All 18

Every AS seen directly next to AS24971 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv61,623
AS9002RETN LimitedUnclassifiedIPv4 IPv61,584
AS6939Hurricane Electric LLCTransitIPv4 IPv6650
AS204957ROUTE 95 LLCUnclassifiedIPv4 IPv6541
AS48921Yoursafe Holding B.V.UnclassifiedIPv4 IPv6479
AS207167mapnet IT services s.r.o.UnclassifiedIPv4 IPv6419
AS51134Development 777 s.r.o.UnclassifiedIPv4 IPv6190
AS211085mapnet IT services s.r.o.UnclassifiedIPv4 IPv6127
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv6120
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv6119

All 18 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.22M 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.