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AS numbers

AS204666 Jiri Tlapak

AS204666 is operated by Jiri Tlapak and registered with RIPE NCC (CZ) since 2018-01-29.

It announces 38 IPv4 and 11 IPv6 prefixes, 100% of them RPKI valid.

RIPE RIS sees 2 upstream and peer networks and 2 downstream networks next to it.

PeeringDB lists it with no exchanges or facilities.

NameJiri Tlapak
Registry (RIR)RIPE NCC
CountryCzechia (CZ)
Delegated on2018-01-29
Network typeNot Disclosed
Prefixes (IPv4 / IPv6)38 / 11
RPKI valid100% (49 / 49)
Upstreams and peers2
Downstream networks2

Routing health

  • AS204666 announces 38 IPv4 and 11 IPv6 prefixes.
  • All 49 announced prefixes are RPKI valid.
  • 2 upstreams and peers, 2 downstream networks seen.

For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.

Announced prefixes 49

  • 5.59.102.0/23
  • 37.221.240.0/20
  • 37.221.241.0/24
  • 37.221.242.0/24
  • 37.221.243.0/24
  • 37.221.245.0/24
  • 37.221.247.0/24
  • 37.221.248.0/24
  • 37.221.249.0/24
  • 37.221.250.0/24
  • 37.221.251.0/24
  • 37.221.252.0/24
  • 45.153.192.0/22
  • 45.153.192.0/24
  • 45.153.194.0/24
  • 45.153.195.0/24
  • 85.255.88.0/22
  • 91.224.90.0/23
  • 176.119.192.0/24
  • 185.19.0.0/22
  • 185.64.220.0/22
  • 185.64.220.0/24
  • 185.64.222.0/24
  • 185.74.60.0/24
  • 185.87.140.0/22
  • 185.87.142.0/23
  • 185.87.143.0/24
  • 185.97.24.0/22
  • 185.97.24.0/24
  • 185.97.25.0/24
  • 185.97.26.0/24
  • 185.188.100.0/24
  • 185.188.101.0/24
  • 185.188.103.0/24
  • 185.230.172.0/22
  • 185.243.172.0/22
  • 213.108.162.0/23
  • 213.108.162.0/24
  • 2a0a:10c0::/29
  • 2a0d:1880::/29
  • 2a0d:3140::/29
  • 2a0f:9300::/29
  • 2a0f:fec0::/29
  • 2a03:d840::/32
  • 2a03:d840:fe02::/48
  • 2a04:c740::/29
  • 2a04:f940::/29
  • 2a05:aa00::/29
  • 2a06:400::/29

Upstreams and peers 2

The networks RIPE RIS sees next to AS204666 in BGP paths, the most visible first.

Peering

Peering policy: not stated. PeeringDB record

More about AS204666

Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-15 13:17 UTC. The country is where the AS number was registered, not necessarily where the network operates.