AS39790 Web4U s.r.o. 🇨🇿 CZ
Announcing 8 prefixes, seen at the RIS collectors.
IPv4 prefixes
5
9,728 (38 × /24)
IPv6 prefixes
3
2 × /32
Upstreams
2
transit providers observed
Peers
3
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS39790
- Name
- Web4U s.r.o.
- Organisation
- WEB4U
- Country
- 🇨🇿 CZ
- RIR
- RIPENCC
- Allocated
- 2006-04-25
- Network type
- Content
- Traffic levels
- 1-5Gbps
- Scope
- Europe
- Peering policy
- Open
- IRR as-set
- AS-WEB4U
- Website
- https://www.web4u.cz
- Looking glass
- https://lg.web4u.cz
- PeeringDB
- net/18727
- Exchanges
- 2
- Facilities
- 2
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Upstreams
Networks seen providing transit to this one
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS199803 ComSource s.r.o. | 🇨🇿 CZ | 65 | 2 | 197 | CAIDA |
| AS25248 RADIOKOMUNIKACE a.s. | 🇨🇿 CZ | 34 | 5 | 66 | CAIDA |
Peers
Adjacencies that look settlement-free rather than transit
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS6939 Hurricane Electric LLC | 🇺🇸 US | 53,580 | 185 | 50 | CAIDA |
| AS24482 SG.GS | 🇸🇬 SG | 4,709 | 45 | 3 | CAIDA |
| AS29504 Freenet Liberec, z.s. | 🇨🇿 CZ | 0 | 1 | 3 | CAIDA |
Downstreams
Networks this one appears to provide transit to
No downstreams observed at the collectors.
Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.