AS39790 WEB4U Web4U s.r.o.
🇨🇿Org handle: ORG-WS296-RIPE
RIPE NCCallocatedASPA Published
Announced Prefixes (BGP)
8total
5 IPv43 IPv6
IPv4 Addresses
Allocated (RIR)7,232
Announced (BGP)9,728
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)1.5×10²⁹
Routing hygiene
Score 5/100 · Low riskRPKI ROA coverage
100%
no RPKI invalid prefixes
IRR route objects
100%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
2
diversity 47/100
- All announced prefixes have a valid ROA and a matching IRR route object
Based on 8 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained
Announced Prefixes
(BGP)8|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 |
Allocated Prefixes
(RIR)11Prefix | Country | RIR | Status |
|---|---|---|---|
| 81.91.80.0/20 | 🇨🇿 CZ | RIPENCC | allocated |
| 81.91.80.0/26 | 🇨🇿 CZ | RIPE | assigned |
| 81.91.81.0/24 | 🇨🇿 CZ | RIPE | assigned |
| 81.91.82.0/24 | 🇨🇿 CZ | RIPE | assigned |
| 81.91.83.0/24 | 🇨🇿 CZ | RIPE | assigned |
| 81.91.84.0/24 | 🇨🇿 CZ | RIPE | assigned |
| 81.91.85.0/24 | 🇨🇿 CZ | RIPE | assigned |
| 81.91.86.0/23 | 🇨🇿 CZ | RIPE | assigned |
| 81.91.90.0/24 | 🇨🇿 CZ | RIPE | assigned |
| 185.14.224.0/22 | 🇨🇿 CZ | RIPENCC | allocated |
1-10 of 11
1 / 2
All 8 announced prefixes of AS39790 →
BGP Neighbours
(seen in AS paths)Abuse Contact
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- How to run an ASPA checkVerify the upstream providers listed above
- IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/39790Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/39790" | jq