asn.dev

Autonomous system

AS12426 SLOVANET-MADNET

Unclassified RIPE

IPv4 addresses 5.89K 4 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly SK
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Slovanet

Slovakia · AI-generated

isp telecom legacy

A Slovak provider with four prefixes and one of them reserved for telephone traffic.

What it's used for

  • Internet access and voice. 5,888 addresses in four IPv4 prefixes with a single observed BGP neighbour and no IPv6 announced.

Notable

  • Three blocks are netname SK-SLOVANET with the allocation date appended, from SK-SLOVANET-20010223 through SK-SLOVANET-20140905.
  • The fourth, 185.69.51.0/24, is netname SLOVANET-SIPVOIP — a whole /24 named for the service it carries.
  • Reverse DNS runs across three domains: real-net.sk, cloudlink.sk and infra.slovanet.sk.
  • The AS handle is SLOVANET-MADNET, two names joined.

Interesting

  • Naming a /24 after SIP is an operational statement. Voice needs addresses that can be identified from outside — for firewall rules, for peering with other carriers, for the trunk configuration on somebody else's PBX — and the cheapest way to make a range recognisable is to put its purpose in the registry.
  • Three rDNS domains and a hyphenated handle in a four-prefix AS say the same thing the netnames do. Small national providers grow by buying smaller ones, and the seams show in DNS long before anything renumbers.

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
AS8778Slovanet a.s.177

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 4 prefixes · 5.89K addresses IPv6 0 prefixes

CountryNamePrefixes
SKSlovakia4

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS12426
Registry name
SLOVANET-MADNET
Registrant
Slovanet a.s.
Abuse contact
abuse00@slovanet.net
Registered
2002-01-30
Last changed
2024-11-13
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
67% valid · 2 valid, 1 with no ROA
ROAs
2 authorising AS12426
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
4 naming AS12426

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: 442 networks and 1,771 prefixes, as published 2026-10-15. 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