subnet.im

AS6855Slovak Telekom, a.s.

SlovakiaRegistryRIPE NCCTypeEyeball

As of 22nd October 2026, AS6855 (Slovak Telekom, a.s.), an access network registered in Slovakia with RIPE NCC, originates 37 IPv4 prefixes covering 664k addresses and 9 IPv6 prefixes. By IPv4 address space that makes it the 594th-largest of the 79,663 networks we see originating IPv4, and the 2nd-largest of 191 in Slovakia. It is seen behind 6 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS3320 (Deutsche Telekom AG), and in front of 106 downstream networks. 76% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

37

IPv6 prefixes

9

IPv4 addresses

664k

IPv6 /64s

38.7B

Upstream graph

The networks AS6855 is seen behind, one and two hops out, drawn from real AS paths.

AS6855Toward the internet core
Upstream graph for AS6855: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS6855Slovak Telekom, a…This networkAS1299Arelion (fka. Tel…AS3320Deutsche Telekom …AS6461Zayo BandwidthAS6939Hurricane Electri…AS33891Core-Backbone GmbHAS16552Tiggee LLCAS13030Init7 (Switzerlan…AS37271Workonline Commun…AS20130Depaul UniversityAS132337AxclusiveAS6667Elisa OyjAS24940Hetzner Online Gm…

Networks observed one and two hops upstream of AS6855 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

233

adjacent networks

Upstreams
63%
Peers
12152%
Downstreams
10645%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS6855
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer15,694141
AS3320Deutsche Telekom AGDEPeer4,48491
AS33891Core-Backbone GmbHDEPeer2,05220
AS6939Hurricane Electric LLCUSPeer43917
AS6461Zayo BandwidthUSPeer591
AS44185bonet.systems, s. r. o.SKPeer44

Prefixes

All 46

The largest blocks AS6855 originates, widest first.

Largest prefixes originated by AS6855
PrefixAddressesVisibility
78.98.0.0/15131k77/77
95.102.0.0/15131k77/77
178.40.0.0/15131k77/77
87.197.0.0/1665.5k77/77
91.127.0.0/1665.5k77/77
84.47.0.0/1732.8k77/77
195.91.0.0/1732.8k77/77
213.81.128.0/1732.8k77/77
194.154.224.0/198.2k77/77
195.146.128.0/198.2k77/77

Routing health

How AS6855's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid76.1%35
  • Invalid0.0%0
  • No ROA23.9%11

Propagation

  • Globally propagated90% of full-feed peers or more100.0%46
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 37 prefixes

IPv6 — 9 prefixes

  • /2934.4B × /6411.1%1
  • /324.3B × /6411.1%1
  • /4016.8M × /6411.1%1
  • /4865.5k × /6466.7%6

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.