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
4
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
Announced prefixes
8 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 81.91.80.0/20 v4 | RPKI valid | 42 | 2448239790 | 2026-09-18 |
| 81.91.80.0/21 v4 | RPKI valid | 42 | 2448219980339790 | 2026-09-18 |
| 81.91.88.0/21 v4 | RPKI valid | 42 | 2448219980339790 | 2026-09-18 |
| 185.14.224.0/22 v4 | RPKI valid | 42 | 2448239790 | 2026-09-18 |
| 185.14.224.0/23 v4 | RPKI valid | 41 | 2448219980339790 | 2026-09-18 |
| 2001:1568::/32 v6 | RPKI valid | 38 | 2448239790 | 2026-09-18 |
| 2001:1568::/33 v6 | RPKI valid | 36 | 2448219980339790 | 2026-09-18 |
| 2001:1568:8000::/33 v6 | RPKI valid | 36 | 2448219980339790 | 2026-09-18 |