subnet.im

AS207187TKR Jasek, s.r.o.

CzechiaRegistryRIPE NCCTypeEyeball

As of 27th September 2026, AS207187 (TKR Jasek, s.r.o.), an access network registered in Czechia with RIPE NCC, originates 6 IPv4 prefixes covering 14.3k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 8,653rd-largest of the 79,516 networks we see originating IPv4, and the 53rd-largest of 574 in Czechia. It is seen behind 11 upstream networks, most often AS209810 (Netcore services s.r.o.) and AS39392 (SH.cz s.r.o.), and in front of 8 downstream networks. 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

6

IPv6 prefixes

3

IPv4 addresses

14.3k

IPv6 /64s

103B

Upstream graph

The networks AS207187 is seen behind, one and two hops out, drawn from real AS paths.

AS207187Toward the internet core
Upstream graph for AS207187: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS207187TKR Jasek, s.r.o.This networkAS6939Hurricane Electri…AS24482SG.GSAS24940Hetzner Online Gm…AS39392SH.cz s.r.o.AS209810Netcore services …AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS6453TATA Communicatio…AS38623Metfone (Viettel …AS1299Arelion (fka. Tel…AS33891Core-Backbone GmbHAS3491PCCW Global (HK) …

Networks observed one and two hops upstream of AS207187 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

65

adjacent networks

Upstreams
1117%
Peers
4671%
Downstreams
812%

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

Upstreams of AS207187
NetworkCountryRelationshipPathsVantage pts
AS209810Netcore services s.r.o.CZPeer1,17952
AS39392SH.cz s.r.o.CZPeer1,12261
AS6939Hurricane Electric LLCUSPeer34718
AS24482SG.GSSGPeer633
AS32590Valve CorporationUSPeer412
AS49544i3D.net B.VNLPeer412
AS24940Hetzner Online GmbHDEPeer412
AS8218Zayo EuropeFRPeer342
AS132337AxclusiveSGPeer241
AS22356Durand do Brasil LtdaBRPeer221

Prefixes

The largest blocks AS207187 originates, widest first.

Largest prefixes originated by AS207187
PrefixAddressesVisibility
213.194.224.0/198.2k81/81
213.194.216.0/212k81/81
45.130.248.0/221k81/81
185.163.180.0/221k81/81
185.214.116.0/221k80/81
213.194.212.0/221k81/81
2a0a:1c00::/2934.4B × /6462/64
2a0b:99c0::/2934.4B × /6462/64
2a0e:59c0::/2934.4B × /6462/64

Routing health

How AS207187'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%9
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%9
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 6 prefixes

IPv6 — 3 prefixes

  • /2934.4B × /64100.0%3

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS207187 started or stopped in this period.

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