asn.dev

Autonomous system

AS42665 SIRTI-AS SIRTI S.p.A.

Unclassified RIPE

IPv4 addresses 512 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly IT
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Sirti S.p.A.

Italy · AI-generated

business telecom infrastructure

The AS handle SIRTI-AS is held by Sirti S.p.A.

What it's used for

  • The address space carries corporate infrastructure, with the netname SIRTI and registrant SIRTI S.p.A.; SIRTI Abuse Handling associated with the single announced prefix.
  • The inventory consists of 512 IPv4 addresses within 1 prefix, with 1 observed neighbour, indicating a small, self-contained corporate network rather than a transit or access provider.
  • Traffic from this AS represents internal operations for Sirti, an Italian company that develops network infrastructure, digital services, and cybersecurity solutions, including traffic control systems for transport and energy sectors.

Notable

  • The registrant SIRTI S.p.A. aligns directly with the AS holder, confirming consistent ownership of the address space.
  • Sirti was formerly part of Telecom Italia, reflecting its historical roots in the Italian telecommunications sector before becoming an independent infrastructure provider.
  • The address inventory is compact, consisting of a single /23 block (193.33.18.0/23) with no IPv6 prefixes announced.

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
AS203201INFRASTRUCTURE ITALIA COLO S.R.L.180

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 1 prefixes · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
ITItaly1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS42665
Registry name
SIRTI-AS
Registrant
SIRTI S.p.A.
Abuse contact
abuse_sirti@sirti.it
Registered
2007-03-29
Last changed
2021-08-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS42665
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS42665

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 1,851 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