Autonomous system
AS28571 AS28571 - UNIVERSIDADE DE SAO PAULO
Education RIPE Educational/Research
Summary
Universidade de São Paulo (USP)
education research university
The campus network of the Universidade de São Paulo (USP), the largest and one of the most prominent public research universities in Brazil.
What it's used for
- Campus, research, and administrative networking across USP's campuses.
Notable
- An IP here is institutional (campus, labs, research clusters), classified
educationrather than commercial hosting.
Interesting
- USP is consistently ranked among the top universities in Latin America and operates several campuses across the state of São Paulo.
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 | 187.16.216.20 |
Transit providers
9 upstream, 0 downstream and 13 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 47 prefixes · 155K addresses IPv6 66 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 113 |
Registry
Allocation record
- Registry
- RIPE
- Handle
28571- Registry name
- ASN28571
- Registrant
- UNIVERSIDADE DE SAO PAULO
- Abuse contact
- CSIRT USP / Grupo de Segurança em TI
- Registered
- 2007-12-19
- Last changed
- 2015-11-12
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- UNIVERSIDADE DE SAO PAULO
- Also known as
- USP
- Network type
- Educational/Research
- Scope
- Regional
- Traffic ratio
- Mostly Outbound
- Peering policy
- Open
- IRR as-set
AS28571- Present at
- 1 exchanges
- Website
- http://www.usp.br
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
- 96% valid · 55 valid, 1 with no ROA 1 RPKI-invalid
- ROAs
- 57 authorising AS28571
- ASPA
- no ASPA record
- IRR
- 100% registered · 57 of 57 announcements
- Route objects
- 25 naming AS28571
Reputation
Classification and threat
Education University, school or national research and education network.
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