Autonomous system
AS28584 Defferrari Solucoes em Internet Ltda
Hosting LACNIC
Summary
DSI Internet
isp residential cable dsl
The AS handle AS28584 is held by Defferrari Solucoes em Internet Ltda, operating as DSI Internet.
What it's used for
- The address space carries residential and business access traffic, evidenced by reverse DNS records pointing to
rev.dsi.net.brand PeeringDB classifying the operator as a Cable/DSL/ISP. - The network announces 13056 IPv4 addresses across 12 prefixes and 1 IPv6 prefix, while maintaining only 1 observed neighbour, a ratio that indicates a regional access provider rather than a transit carrier.
Notable
- All available RDAP registrants match the announcer, consistently listing Defferrari Solucoes em Internet Ltda for netnames 412250, 49483, 99296, and 412251.
- The address inventory is concentrated in the 200.159.0.0/16 range, with additional blocks in 177.39.0.0/16, 177.129.0.0/16, and 131.72.0.0/16, reflecting a typical regional ISP footprint in Brazil.
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.
Transit providers
1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS28605 | Defferrari Informatica Ltda. | 1,169 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 9 prefixes · 13.31K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 10 |
Registry
Allocation record
- Registry
- LACNIC
- Handle
28584- Registry name
- ASN28584
- Registrant
- Defferrari Solucoes em Internet Ltda
- Abuse contact
- Marco Defferrari
- Registered
- 2004-07-22
- Last changed
- 2025-07-17
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 20 valid, 0 with no ROA
- ROAs
- 7 authorising AS28584
- ASPA
- no ASPA record
- IRR
- 100% registered · 20 of 20 announcements
- Route objects
- 7 naming AS28584
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
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 1,784 prefixes, as published 2026-10-19. 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