Autonomous system
AS15584 SIAG SIAG Autonomous System
Unclassified RIPE
Summary
SIAG Informatica Alto Adige
business enterprise infrastructure
All six blocks share one netname and one allocation date, down to the day.
What it's used for
- A regional technology company's network. Six IPv4 prefixes announced from Italy, no IPv6, four thousand six hundred addresses, across three observed BGP neighbours.
Notable
- Every block carries the identical netname, ending in the same allocation date, so all six are pieces of one original grant rather than separate acquisitions.
- Five of the six fit together end to end with no gap between them, covering four thousand consecutive addresses that could be announced as a single route.
- The sixth sits apart from the rest, a
/23further up the same range. - Registrants are the company and its network administration role, with no third party anywhere.
- Eighteen addresses were queried for reverse DNS and none returned a name.
- No IPv6 is announced at all.
Interesting
- Splitting one contiguous grant into five routes adds four entries to every routing table on earth and gives the operator per-piece control over which upstream carries what.
- Twenty-five years of routing history on a network that still announces no IPv6 is a common pattern for organisations whose users are internal and whose address needs stopped growing.
- One netname on six blocks is unusually tidy for a registry record. Most holders this size have collected at least one inconsistent entry.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 4.61K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| IT | Italy | 6 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS15584- Registry name
- SIAG
- Registrant
- Informatica Alto Adige Spa
- Abuse contact
- networks@siag.it
- Registered
- 2002-07-02
- Last changed
- 2026-01-27
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 27 valid, 0 with no ROA
- ROAs
- 28 authorising AS15584
- ASPA
- 3 declared providers
- IRR
- 100% registered · 27 of 27 announcements
- Route objects
- 27 naming AS15584
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 1,781 prefixes, as published 2026-10-16. 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