Autonomous system
AS56821 KNVNET1-AS
Unclassified APNIC
Summary
KnVnet services s.r.o.
isp residential czechia local
KNVNET1-AS is operated by KnVnet services s.r.o.
What it's used for
- The address space carries local internet, telephone, and television services, as indicated by the operator's public service description for the Kralupy nad Vltavou region.
- The AS announces 2048 IPv4 addresses and 2 IPv6 prefixes, with only 1 observed neighbour, indicating a small-scale local access network rather than a transit provider.
- Traffic from this AS consists of subscriber eyeballs for residential and small business customers in the Kralupy nad Vltavou area, utilizing the operator's local infrastructure.
Notable
- The registrant for the announced prefix 89.239.24.0/21 is listed as "Abuse-C Role" with netname
knvn-netrange, which aligns with the announcer KnVnet services s.r.o. - The address inventory is compact, consisting of a single /21 IPv4 block and two /32 IPv6 prefixes, all located in Czechia.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS16019 | Vodafone Czech Republic a.s. | 126 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 2.05K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 3 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS56821- Registry name
- knvnet1-as
- Registrant
- lir-cz-knvnet1-1-MNT
- Abuse contact
- info@knvnet.cz
- Registered
- 2018-09-18
- Last changed
- 2025-03-27
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 3 valid, 0 with no ROA
- ROAs
- 3 authorising AS56821
- ASPA
- 1 declared providers
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 3 naming AS56821
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,782 prefixes, as published 2026-10-16. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere