asn.dev

Observed topology

AS6855 SK-TELEKOM Slovak Telekom, a.s.

Mobile RIPE

Upstreams 7 carry this network
Downstreams 108 this network carries
Adjacent (IPv4) 115
Adjacent (IPv6) 52
Upstream graph Who carries AS6855, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS6855 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS6855: 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 IPv61,475
AS3320Deutsche Telekom AGMobileIPv4 IPv6690
AS6939Hurricane Electric LLCTransitIPv4 IPv6197
AS33891Core-Backbone GmbHHostingIPv4 IPv6135
AS47232ISP Alliance a.s.ResidentialIPv439
AS6461Zayo BandwidthTransitIPv425
AS30764PODA a.s.ResidentialIPv41

Transit

Downstream networks

All 108

Networks for which AS6855 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS13036T-Mobile Czech Republic a.s.UnclassifiedIPv4 IPv62,116
AS29148SURANY.NET s.r.o.UnclassifiedIPv4 IPv6830
AS49117DTnet Detva s.r.o.UnclassifiedIPv4 IPv6532
AS48298MINISTERSTVO VNITRA CRUnclassifiedIPv4 IPv6442
AS21433Accenture UK LimitedUnclassifiedIPv4389
AS30898DataCentrumUnclassifiedIPv4369
AS216450Letiste Praha, a. s.UnclassifiedIPv4285
AS50881ESET, spol. s r.o.UnclassifiedIPv4 IPv6241
AS34475Agrostroj Pelhrimov, a.s.UnclassifiedIPv4240
AS201447The Czech National BankUnclassifiedIPv4236

All 108 downstreams →

Adjacency

Adjacent networks

All 116

Every AS seen directly next to AS6855 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv610,437
AS3320Deutsche Telekom AGMobileIPv4 IPv63,515
AS13036T-Mobile Czech Republic a.s.UnclassifiedIPv4 IPv62,116
AS33891Core-Backbone GmbHHostingIPv4 IPv61,017
AS6939Hurricane Electric LLCTransitIPv4 IPv6919
AS29148SURANY.NET s.r.o.UnclassifiedIPv4 IPv6830
AS49117DTnet Detva s.r.o.UnclassifiedIPv4 IPv6532
AS48298MINISTERSTVO VNITRA CRUnclassifiedIPv4 IPv6442
AS21433Accenture UK LimitedUnclassifiedIPv4389
AS30898DataCentrumUnclassifiedIPv4369

All 116 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-09 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.03M 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.