AS56821 knvnet1-as KnVnet services s.r.o.
🇨🇿Org handle: ORG-KSS26-RIPE
RIPE NCCallocatedASPA Published
Announced Prefixes (BGP)
3total
1 IPv42 IPv6
IPv4 Addresses
Allocated (RIR)2,304
Announced (BGP)2,048
IPv6 Addresses
Allocated (RIR)7.9×10²⁹
Announced (BGP)1.5×10²⁹
Routing hygiene
Score 10/100 · 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
1
diversity 0/100
- Only one upstream seen in the AS paths of its routes
Based on 3 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained
Announced Prefixes
(BGP)3|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 |
Allocated Prefixes
(RIR)5Prefix | Country | RIR | Status |
|---|---|---|---|
| 78.108.113.0/24 | 🇨🇿 CZ | RIPENCC | allocated |
| 89.239.24.0/21 | 🇨🇿 CZ | RIPE | assigned |
| 2a02:4007::/32 | 🇨🇿 CZ | RIPE | assigned |
| 2a14:9880::/29 | 🇨🇿 CZ | RIPENCC | allocated |
| 2a14:9880::/32 | 🇨🇿 CZ | RIPE | assigned |
All 3 announced prefixes of AS56821 →
Upstream Providers(1)
| ASN | Name |
|---|---|
| AS16019 | 🇨🇿VODAFONE-CZ-AS Vodafone Czech Republic a.s. |
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/56821Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/56821" | jq