asn.dev

Autonomous system

AS51524 ASNETDELUXE

Unclassified RIPE

IPv4 addresses 2.05K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Netdeluxe

Czechia · AI-generated

residential isp czechia

ASNETDELUXE is operated by Ales Tesacek, a small Czech internet service provider.

What it's used for

  • The space carries residential customer traffic, evidenced by the reverse DNS record 254.45.customer.smartnet.cz and the netname NETDELUXE-NETWORK.
  • The AS announces a single IPv4 prefix, 178.213.40.0/21, comprising 2048 addresses, with no IPv6 inventory.
  • With only one observed neighbour, the network functions as a local access provider for end-user subscribers in the Slavkov u Brna region.

Notable

  • The RDAP registrant Ales Tesacek; Netdeluxe team aligns directly with the AS holder ASNETDELUXE Ales Tesacek.
  • The address inventory consists of a single contiguous /21 block, typical for a small regional ISP managing a dedicated customer pool.

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 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS25512CD-Telematika a.s.59

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-29, 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 · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
CZCzechia1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS51524
Registry name
ASNETDELUXE
Registrant
NETDELUXE-MNT
Abuse contact
info@netdeluxe.cz
Registered
2010-09-17
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS51524
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS51524

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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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