Autonomous system
AS21101 SISTEMIUNO-AS ASP - Application Service Provider
Residential RIPE Cable/DSL/ISP
Summary
Sistemi Hardware&Software S.P.A.
isp residential italy unonet
The AS handle SISTEMIUNO-AS is held by Sistemi Hardware&Software S.P.A., operating under the Unonet brand.
What it's used for
- The address space carries residential and small business access traffic, evidenced by reverse DNS entries such as
comune-frossasco-vocenet.unonet.itandcpm-beinasco14.unonet.it. - With 5120 IPv4 addresses announced across 7 prefixes and 55 observed neighbours, the ratio suggests a regional access provider rather than a transit hub.
Notable
- Registrants for six of the seven prefixes are consistent with the announcer, listed as Sistemi Hardware&Software S.P.A. with Unonet Abuse Handling.
- The prefix 193.150.112.0/24 is registered to SATIZ TECHNICAL PUBLISHING & MULTIMEDIA S.R.L. under the netname SATIZ-NET, indicating a distinct ownership or lease arrangement for this specific block.
- The inventory consists of seven IPv4 prefixes with no IPv6 announcements, reflecting a legacy IPv4-only footprint.
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
Internet exchanges
Recorded at 4 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| France-IX Paris | Paris, France | 37.49.236.179 |
| Milan Internet Exchange | Milan, Italy | 217.29.66.89 |
| Torino Piemonte Exchange Point | Torino, Italy | 194.116.96.39 |
| France-IX Lyon | Lyon, France | 77.95.71.200 |
Transit providers
9 upstream, 2 downstream and 12 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 5.12K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| IT | Italy | 7 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS21101- Registry name
- SISTEMIUNO-AS
- Registrant
- MNT-SISTEMIUNO
- Abuse contact
- abuse@unonet.it
- Registered
- 2002-03-26
- Last changed
- 2025-03-05
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Sistemi HS
- Also known as
- Unonet
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
AS-SISTEMIUNO- Present at
- 4 exchanges
- Facilities
- 3 facilities
- Website
- http://www.unonet.it
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 95% valid · 19 valid, 1 with no ROA
- ROAs
- 5 authorising AS21101
- ASPA
- no ASPA record
- IRR
- 100% registered · 20 of 20 announcements
- Route objects
- 24 naming AS21101
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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 2026-10-29. 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