asn.dev

Autonomous system

AS198002 CEZNET-AS CEZNET s.r.o.

Unclassified RIPE

IPv4 addresses 8.19K 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

CEZNET s.r.o.

Czechia · AI-generated

business czechia corporate

The AS handle CEZNET-AS is held by CEZNET s.r.o.

What it's used for

  • The address space carries corporate infrastructure, evidenced by the netname CZ-CEZNET21-20110819 and registrant CEZNET s.r.o.
  • The network announces 8192 IPv4 addresses and 1 IPv6 prefix with only 1 observed neighbour, indicating a small, self-contained corporate estate rather than a transit or access provider
  • Traffic from this AS consists of internal corporate communications and services for CEZNET s.r.o., a Czech telecommunications operator

Notable

  • The registrant CEZNET s.r.o. matches the AS holder, confirming consistent ownership
  • The address inventory consists of a single IPv4 block (149.255.64.0/19) and one IPv6 prefix (2a03:1180::/32), representing a compact, unified corporate network

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

Full topology · Graph

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.

ASNetworkPaths seen
AS39791Telco Pro Services, a. s.92

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 8.19K addresses IPv6 1 prefixes

CountryNamePrefixes
CZCzechia2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS198002
Registry name
CEZNET-AS
Registrant
CEZNET-MNT
Abuse contact
dohled@ceznet.cz
Registered
2011-08-17
Last changed
2025-09-12
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS198002
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS198002

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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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

Cross-check