asn.dev

Autonomous system

AS25409 ALSYSDATA

Unclassified RIPE

IPv4 addresses 2.82K 3 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly RO
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Alsys Net SRL

Romania · AI-generated

business rumania corporate

The AS handle ALSYSDATA is operated by Alsys Net SRL.

What it's used for

  • The address space is registered under netnames RO-ALSYSNET-20080516, RO-ALSYSNET-20090130, and ALSYS-DATA-SRL, all attributed to Alsys Net SRL.
  • A single reverse DNS record broadcastalsyshq.alsys.ro indicates the space carries corporate infrastructure for the Alsys headquarters.
  • The AS announces 2816 IPv4 addresses across 3 prefixes and 2 IPv6 prefixes, with only 2 observed neighbours, suggesting a small, self-contained corporate network rather than a transit or access provider.

Notable

  • All registrants in the RDAP data match the announcer, consistently listing Alsys Net SRL.
  • The address inventory is compact, consisting of one /21, one /23, and one /24 block, all located in Romania.

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

2 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS39737Prime Telecom srl237
AS8708DIGI ROMANIA S.A.6

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-24, 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 3 prefixes · 2.82K addresses IPv6 2 prefixes

CountryNamePrefixes
RORomania5

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS25409
Registry name
ALSYSDATA
Registrant
ALSYS-MNT
Abuse contact
domainadmin@alsys.ro
Registered
2002-11-13
Last changed
2017-11-15
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 5 valid, 0 with no ROA
ROAs
5 authorising AS25409
ASPA
no ASPA record
IRR
100% registered · 5 of 5 announcements
Route objects
5 naming AS25409

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 1,779 prefixes, as published 2026-10-24. 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