Autonomous system
AS1251 FUNDACAO DE AMPARO A PESQUISA DO ESTADO SAO PAULO
Unclassified LACNIC
Summary
FAPESP / ANSP (Rednesp)
education research legacy
The academic network of São Paulo (FUNDACAO DE AMPARO A PESQUISA DO ESTADO SAO PAULO), operated by FAPESP, the São Paulo Research Foundation, as ANSP — now Rednesp.
What it's used for
- Connecting universities and research institutions across the state of São Paulo to each other and to international research networks.
Notable
- A publicly funded research and education network, not a commercial ISP.
Interesting
- ANSP helped bring the first internet connectivity to São Paulo, and the network now anchors international research links between Brazil, the US, and beyond.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.216.189 |
Transit providers
6 upstream, 14 downstream and 30 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 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 49 prefixes · 122K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 50 |
Registry
Allocation record
- Registry
- LACNIC
- Registered
- 1999-11-12
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 79% valid · 33 valid, 9 with no ROA
- ROAs
- 43 authorising AS1251
- ASPA
- no ASPA record
- IRR
- 90% registered · 38 of 42 announcements
- Route objects
- 67 naming AS1251
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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