asn.dev

Autonomous system

AS43451 SLOVANET-RADIOLAN Slovanet a.s.

Unclassified RIPE

IPv4 addresses 19.71K 9 prefixes
IPv6 prefixes 4 counted as prefixes, not addresses
Countries 1 mostly SK
Exchanges 1 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Slovanet

Slovakia · AI-generated

residential isp cable dsl

The AS handle SLOVANET-RADIOLAN is held by Slovanet a.s.

What it's used for

  • The address space carries residential broadband traffic, evidenced by reverse DNS records pointing to radiolan.sk and netnames consistently labeled SK-SLOVANET.
  • With 19,712 IPv4 addresses announced across 9 prefixes and only 1 observed neighbour, the network functions as an access provider rather than a transit hub.
  • Traffic from this AS consists of subscriber eyeballs accessing the internet via cable and DSL connections, consistent with the operator's business model as a Slovakian ISP.

Notable

  • All registrants for the announced prefixes are Slovanet a.s., matching the AS holder and confirming a unified corporate estate.
  • The address inventory is subdivided into multiple /21 and /22 blocks, reflecting site-by-site or technology-specific segmentation within the 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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
Peering.czPrague, Czech Republic185.0.20.180

Transit providers

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS8778Slovanet a.s.1,472

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-03, 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 9 prefixes · 19.71K addresses IPv6 4 prefixes

CountryNamePrefixes
SKSlovakia13

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS43451
Registry name
SLOVANET-RADIOLAN
Registrant
Slovanet a.s.
Abuse contact
abuse00@slovanet.net
Registered
2007-08-01
Last changed
2024-11-13
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
92% valid · 24 valid, 2 with no ROA
ROAs
11 authorising AS43451
ASPA
no ASPA record
IRR
100% registered · 26 of 26 announcements
Route objects
30 naming AS43451

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: 451 networks and 1,853 prefixes, as published 2026-11-04. 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