Autonomous system
AS208171 CSO-SRLS CSO S.r.l.s.
Unclassified RIPE
Summary
CSO S.r.l.s.
business italy small
The AS handle CSO-SRLS is held by CSO S.r.l.s.
What it's used for
- The address space carries business traffic, as indicated by reverse DNS entries like
host-185-224-30-64.business.cso.itand the netnameIT-NETJOIN-20230307. - The AS announces 256 IPv4 addresses and 2 IPv6 prefixes, with 33 observed neighbours. This ratio of a small address inventory to a high number of peering relationships suggests a transit or interconnection role rather than a large access network.
- Traffic from this AS consists of business endpoints and services operated by CSO S.r.l.s., a company based in Italy.
Notable
- Registrants for the announced prefix include CSO S.r.l.s. and Michele Pietravalle trading as NETJOIN S.R.L., indicating a shared or related operational structure.
- The address inventory is compact, consisting of a single /24 IPv4 block and two /48 IPv6 prefixes, all located in Italy.
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 2 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| 4b42 Internet Exchange Point | Zurich, Switzerland | 185.1.125.30 |
| Milan Neutral Access Point | Milan, Italy | 185.1.114.59 |
Transit providers
10 upstream, 0 downstream and 14 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 2026-11-03, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 256 addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| IT | Italy | 3 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS208171- Registry name
- CSO-SRLS
- Registrant
- CSO-SRLS-MNT
- Abuse contact
- abuse@cso.it
- Registered
- 2022-02-25
- Last changed
- 2026-09-04
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- CSO
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- IRR as-set
AS-CSO-SRLS- Present at
- 4 exchanges
- Website
- https://www.cso.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
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 1 authorising AS208171
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 4 naming AS208171
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