asn.dev

Autonomous system

AS44091 SISTEMISPA-AS Via Magenta 31

Unclassified RIPE

IPv4 addresses 2.05K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly IT
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Sistemi SpA

Italy · AI-generated

business software cloud

The AS handle SISTEMISPA-AS is held by Sistemi SpA.

What it's used for

  • The space carries a single IPv4 block, 79.99.8.0/21, with the netname IT-SISTEMISPA-20071114 and registrant SISTEMI SPA.
  • The inventory consists of 2048 IPv4 addresses across 1 prefix, with 0 IPv6 prefixes announced.
  • With 3 observed neighbours, the low neighbour count relative to the address space suggests an internal corporate estate or business network rather than a transit provider.
  • Sistemi SpA develops software and cloud services for professional firms, associations, and businesses, indicating the traffic consists of web/API endpoints and business application services.

Notable

  • The RDAP registrant SISTEMI SPA matches the AS holder name SISTEMI SPA and the netname registrant.
  • The address inventory is a single contiguous /21 block, typical of a corporate allocation for internal use.

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

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

ASNetworkPaths seen
AS28716Retelit Digital Services S.p.A.236
AS8220COLT Technology Services Group Limited34
AS21101Sistemi Hardware&Software S.P.A.26

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 1 prefixes · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
ITItaly1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS44091
Registry name
SISTEMISPA-AS
Registrant
SISTEMI SPA
Abuse contact
rt@sistemi.com
Registered
2007-11-16
Last changed
2022-05-25
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 5 with no ROA
ROAs
0 authorising AS44091
ASPA
no ASPA record
IRR
100% registered · 5 of 5 announcements
Route objects
9 naming AS44091

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 1,772 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