Autonomous system
AS56456 C2NET
Unclassified RIPE
Summary
C2NET
isp residential czech small
The AS handle C2NET is held by C2NET s.r.o.
What it's used for
- The address space carries residential and business internet access, as indicated by the reverse DNS record
ip-93-185-11-254.c2net.czand the netnameCZ-C2NET-20080604. - The network announces 4096 IPv4 addresses and 1 IPv6 prefix, with 30 observed neighbours, a ratio consistent with a small regional access provider rather than a transit hub.
- Traffic from this AS consists of subscriber eyeballs and local business endpoints in the Frýdek-Místek region of Czechia.
Notable
- The RDAP registrant
C2NET s.r.o.matches the AS holder and the reverse DNS domainc2net.cz. - The address inventory consists of a single contiguous IPv4 block, 93.185.0.0/20, and one IPv6 prefix, 2a0e:3500::/29.
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
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Peering.cz | Prague, Czech Republic | 185.0.20.48 |
| NIX.CZ - Neutral Internet eXchange for the Czech Republic | Prague, Czech Republic | 91.210.16.157 |
Transit providers
9 upstream, 0 downstream and 15 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, 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 · 4.10K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 2 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS56456- Registry name
- C2NET
- Registrant
- MNT-C2NET
- Abuse contact
- abuse@c2net.cz
- Registered
- 2011-02-24
- Last changed
- 2017-11-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 2 valid, 0 with no ROA
- ROAs
- 2 authorising AS56456
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 2 naming AS56456
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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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