subnet.im

AS200070CZ.NIC, z.s.p.o.

CzechiaRegistryRIPE NCC

As of 22nd October 2026, AS200070 (CZ.NIC, z.s.p.o.), a network registered in Czechia with RIPE NCC, originates 5 IPv4 prefixes covering 1.3k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 33,414th-largest of the 79,663 networks we see originating IPv4, and the 284th-largest of 572 in Czechia. It is seen behind 33 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS7521 (INTERNET MULTIFEED CO.). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 0% of its routes reach at least 90% of full-feed peers, and 10 prefixes are also originated by another network.

At a glance

IPv4 prefixes

5

IPv6 prefixes

5

IPv4 addresses

1.3k

IPv6 /64s

328k

Upstream graph

The networks AS200070 is seen behind, one and two hops out, drawn from real AS paths.

AS200070Toward the internet core
Upstream graph for AS200070: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS200070CZ.NIC, z.s.p.o.This networkAS1299Arelion (fka. Tel…AS1853ACONETAS5459London Internet E…AS7521INTERNET MULTIFEE…AS49544i3D.net B.VAS13030Init7 (Switzerlan…AS16552Tiggee LLCAS6939Hurricane Electri…AS21320GEANT VerenigingAS55391INTERNET MULTIFEE…AS2914NTT America, Inc.AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS200070 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

151

adjacent networks

Upstreams
3322%
Peers
11878%
Downstreams
00%

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

Upstreams of AS200070
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer4230
AS7521INTERNET MULTIFEED CO.JPPeer3726
AS1853ACONETATPeer2217
AS49544i3D.net B.VNLPeer144
AS5459London Internet Exchange Ltd.GBPeer1210
AS7713PT Telkom Indonesia TbkIDPeer113
AS9002RETN LimitedGBPeer83
AS4775Globe TelecomsPHPeer82
AS52075Wifirst S.A.S.FRPeer62
AS6830Liberty Global Europe Holding B.V.EUPeer62

Prefixes

The largest blocks AS200070 originates, widest first.

Largest prefixes originated by AS200070
PrefixAddressesVisibility
185.43.134.0/2425610/77
193.29.206.0/2425620/77
194.0.12.0/242563/77
194.0.14.0/2425665/77
212.237.229.0/2425626/77
2001:678:1::/4865.5k × /6418/64
2001:678:f::/4865.5k × /647/64
2001:678:11::/4865.5k × /6456/64
2001:148f:fffb::/4865.5k × /6425/64
2001:148f:fffd::/4865.5k × /649/64

Routing health

How AS200070'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%10
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%20.0%2
  • Seen by few peersUnder 40%80.0%8

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 5 prefixes

  • /4865.5k × /64100.0%5

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

  • Announced194.0.12.0/2415th Oct 2026
  • Announced2001:678:f::/4815th Oct 2026
  • Withdrawn194.0.12.0/2415th Oct 2026
  • Withdrawn2001:678:f::/4815th Oct 2026

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