AS21101
Sistemi Hardware&Software S.P.A.
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 4 internet exchanges: TOP-IX: Public Peering VLAN, France-IX AURA: lyonix-peering, France-IX Paris, MIX-IT
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 193.109.32.0/21 | 2.0K |
47.8%
|
Sistemi Hardware&Software S.P.A. | IT | Piedmont | Turin |
| 94.143.100.0/22 | 1.0K |
81.5%
|
Sistemi Hardware&Software S.P.A. | IT | — | — |
| 91.240.230.0/23 | 512 |
30.1%
|
Sistemi Hardware&Software S.P.A. | IT | — | — |
| 94.143.96.0/23 | 512 |
20.5%
|
Sistemi Hardware&Software S.P.A. | IT | — | — |
| 185.5.94.0/23 | 512 |
7.8%
|
Sistemi Hardware&Software S.P.A. | IT | — | — |
| 94.143.98.0/24 | 256 |
58.6%
|
Sistemi Hardware&Software S.P.A. | IT | — | — |
| 193.150.112.0/24 | 256 |
10.9%
|
Sistemi Hardware&Software S.P.A. | IT | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS21101 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 94.143.100.0/24 | 10,391 | 2026-08-01 07:35:48 |
| 94.143.101.0/24 | 10,372 | 2026-08-01 07:35:48 |
| 94.143.98.0/24 | 10,361 | 2026-08-01 07:35:48 |
| 94.143.103.0/24 | 10,361 | 2026-08-01 07:35:48 |
| 94.143.96.0/24 | 10,359 | 2026-08-01 07:35:48 |
| 94.143.97.0/24 | 10,352 | 2026-08-01 07:35:48 |
| 91.240.231.0/24 | 10,348 | 2026-08-01 07:35:48 |
| 94.143.102.0/24 | 10,347 | 2026-08-01 07:35:48 |
| 91.240.230.0/24 | 10,337 | 2026-08-01 07:35:48 |
| 193.109.36.0/24 | 10,307 | 2026-08-01 07:35:49 |
| 193.109.33.0/24 | 10,300 | 2026-08-01 07:35:49 |
| 193.109.32.0/24 | 10,299 | 2026-08-01 07:35:49 |
| 193.109.38.0/24 | 10,298 | 2026-08-01 07:35:49 |
| 193.109.37.0/24 | 10,293 | 2026-08-01 07:35:49 |
| 193.109.39.0/24 | 10,283 | 2026-08-01 07:35:49 |
| 193.109.34.0/24 | 10,280 | 2026-08-01 07:35:49 |
| 193.109.35.0/24 | 10,276 | 2026-08-01 07:35:49 |
| 193.150.112.0/24 | 10,266 | 2026-08-01 07:35:49 |
| 185.5.95.0/24 | 10,249 | 2026-08-01 07:35:48 |
| 185.5.94.0/24 | 10,245 | 2026-08-01 07:35:48 |
Frequently Asked Questions
What is AS21101?
AS21101 is an Autonomous System Number assigned to Sistemi Hardware&Software S.P.A.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS21101 announce?
AS21101 announces 5.1K IPv4 addresses distributed across 7 routed CIDR prefixes. The network is registered in Italy.
Who operates AS21101?
AS21101 is operated by Sistemi Hardware&Software S.P.A.. The organization is based in Italy. You can view all IP ranges and related ASNs on the organization page.
What country is AS21101 registered in?
AS21101 is registered in Italy. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
