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AS13036T-Mobile Czech Republic a.s.

CzechiaRegistryRIPE NCCTypeEyeball

As of 22nd October 2026, AS13036 (T-Mobile Czech Republic a.s.), an access network registered in Czechia with RIPE NCC, originates 34 IPv4 prefixes covering 992k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 465th-largest of the 79,655 networks we see originating IPv4, and the 3rd-largest of 572 in Czechia. It is seen behind 1 upstream network, most often AS6855 (Slovak Telekom, a.s.). Every one of its announcements has 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

34

IPv6 prefixes

3

IPv4 addresses

992k

IPv6 /64s

73B

Upstream graph

The networks AS13036 is seen behind, one and two hops out, drawn from real AS paths.

AS13036Toward the internet core
Upstream graph for AS13036: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS13036T-Mobile Czech Re…This networkAS6855Slovak Telekom, a…AS1299Arelion (fka. Tel…AS3320Deutsche Telekom …

Networks observed one and two hops upstream of AS13036 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS13036
NetworkCountryRelationshipPathsVantage pts
AS6855Slovak Telekom, a.s.SKPeer2,810141

Prefixes

All 37

The largest blocks AS13036 originates, widest first.

Largest prefixes originated by AS13036
PrefixAddressesVisibility
46.13.0.0/1665.5k77/77
78.80.0.0/1665.5k77/77
89.24.0.0/1665.5k77/77
109.183.0.0/1665.5k77/77
193.85.0.0/1665.5k77/77
193.86.0.0/1665.5k77/77
193.179.0.0/1665.5k77/77
194.108.0.0/1665.5k77/77
194.212.0.0/1665.5k77/77
213.29.0.0/1665.5k77/77

Routing health

How AS13036'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

  • Valid100.0%37
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%37
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 34 prefixes

IPv6 — 3 prefixes

  • /2934.4B × /6466.7%2
  • /324.3B × /6433.3%1

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

No announcement by AS13036 started or stopped in this period.

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