Autonomous system
AS25424 INEXT-CZ InterneXt 2000, s.r.o.
Residential RIPE Cable/DSL/ISP
Summary
InterneXt 2000
cable dsl isp residential
The AS handle INEXT-CZ is held by InterneXt 2000, s.r.o.
What it's used for
- The address space carries residential customer traffic, evidenced by reverse DNS entries such as
cust-77-92-215-254.inext.czandcust-212-111-23-254.inext.cz. - The network announces 33,792 IPv4 addresses across 7 prefixes and maintains 24 observed neighbours, a ratio consistent with a regional access provider rather than a transit hub.
Notable
- All registrants for the announced prefixes are listed as
CEZNET s.r.o.; INTERNEXT 2000 ABUSE, indicating a unified ownership structure where the registrant name reflects the historical entity. - The address inventory consists of seven distinct IPv4 blocks, including /19s and smaller /21s and /22s, all registered under the netname pattern
CZ-CEZNET21.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| NIX.CZ - Neutral Internet eXchange for the Czech Republic | Prague, Czech Republic | 91.210.16.17 |
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 7 prefixes · 33.79K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 9 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS25424- Registry name
- INEXT-CZ
- Registrant
- CEZNET-MNT
- Abuse contact
- abuse@inext.cz
- Registered
- 2002-11-19
- Last changed
- 2026-08-07
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- InterneXt 2000
- Also known as
- Inext
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
RIPE::AS-INEXT- Present at
- 2 exchanges
- Facilities
- 3 facilities
- Website
- http://www.internext.cz
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 9 valid, 0 with no ROA
- ROAs
- 9 authorising AS25424
- ASPA
- no ASPA record
- IRR
- 100% registered · 9 of 9 announcements
- Route objects
- 9 naming AS25424
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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