AS42000Futruy s.r.o.
CzechiaRegistryRIPE NCCTypeEyeballAs of 10th November 2026, AS42000 (Futruy s.r.o.), an access network registered in Czechia with RIPE NCC, originates 5 IPv4 prefixes covering 6.4k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 13,908th-largest of the 80,733 networks we see originating IPv4, and the 101st-largest of 576 in Czechia. It is seen behind 11 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS6939 (Hurricane Electric LLC), and in front of 13 downstream networks. 50% of its announcements have 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
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS42000 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS42000 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
117
adjacent networks
- Upstreams
- 119%
- Peers
- 9379%
- Downstreams
- 1311%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS1299Arelion (fka. Telia Carrier) |  SE | Peer | 1,499 | 76 |
| AS6939Hurricane Electric LLC |  US | Peer | 952 | 56 |
| AS39392SH.cz s.r.o. | CZ | Peer | 87 | 5 |
| AS49544i3D.net B.V |  NL | Peer | 40 | 2 |
| AS24940Hetzner Online GmbH |  DE | Peer | 40 | 2 |
| AS24482SG.GS |  SG | Peer | 37 | 2 |
| AS32590Valve Corporation | US | Peer | 34 | 2 |
| AS132337Axclusive | SG | Adjacent | 31 | 2 |
| AS22356Durand do Brasil Ltda |  BR | Peer | 27 | 1 |
| AS51800FIBER Network s.r.o. | CZ | Peer | 20 | 20 |
Prefixes
The largest blocks AS42000 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 91.103.160.0/21 | 2k | 76/76 |
| 94.124.104.0/21 | 2k | 76/76 |
| 185.99.68.0/22 | 1k | 76/76 |
| 192.162.96.0/22 | 1k | 76/76 |
| 217.11.245.0/24 | 256 | 76/76 |
| 2a00:1790::/29 | 34.4B × /64 | 63/63 |
Routing health
How AS42000'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
- Valid50.0%3
- Invalid0.0%0
- No ROA50.0%3
Propagation
- Globally propagated90% of full-feed peers or more100.0%6
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%0.0%0
Prefix sizes
IPv4 — 5 prefixes
IPv6 — 1 prefixes
- /2934.4B × /64100.0%1
Recent changes
Announcements that started or stopped since 12th Oct 2026.
No announcement by AS42000 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.