subnet.im

AS5588T-Mobile Czech Republic a.s.

CzechiaRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS5588 (T-Mobile Czech Republic a.s.), an access network registered in Czechia with RIPE NCC, originates 13 IPv4 prefixes covering 3.6k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 19,328th-largest of the 80,747 networks we see originating IPv4, and the 165th-largest of 576 in Czechia. It is seen behind 2 upstream networks, most often AS57608 (FIBO SA) and AS5483 (Magyar Telekom Plc.). None of its announcements have a valid RPKI ROA; 13 are RPKI-invalid. 0% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

13

IPv6 prefixes

1

IPv4 addresses

3.6k

IPv6 /64s

65.5k

Upstream graph

The networks AS5588 is seen behind, one and two hops out, drawn from real AS paths.

AS5588Toward the internet core
Upstream graph for AS5588: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS5588T-Mobile Czech Re…This networkAS5483Magyar Telekom Pl…AS57608FIBO SAAS3320Deutsche Telekom …AS49544i3D.net B.VAS12912T-Mobile Polska S…AS20804Exatel S.A.

Networks observed one and two hops upstream of AS5588 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS5588
NetworkCountryRelationshipPathsVantage pts
AS57608FIBO SAPLPeer81
AS5483Magyar Telekom Plc.HUPeer62

Prefixes

The largest blocks AS5588 originates, widest first.

Largest prefixes originated by AS5588
PrefixAddressesVisibility
91.120.10.0/235121/76
193.32.181.0/242561/76
193.32.182.0/242561/76
193.203.56.0/242561/76
193.203.57.0/242561/76
193.203.58.0/242561/76
194.11.194.0/242561/76
194.88.214.0/242561/76
194.88.215.0/242561/76
194.149.1.0/242561/76

Routing health

How AS5588'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

  • Valid0.0%0
  • Invalid92.9%13
  • No ROA7.1%1

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%100.0%14

Prefix sizes

IPv4 — 13 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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