Autonomous System
AS28571 — AS28571 - UNIVERSIDADE DE SAO PAULO(BR)
Last fetched
AS28571 is an Autonomous System operated by AS28571 - UNIVERSIDADE DE SAO PAULO and registered in BR. As of Tue, 04 Aug 2026 06:03:20 GMT, it announces 57 routed IP prefixes and peers with 4 other Autonomous Systems in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS28571 announces 57 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
- 143.107.3.0/24
- 143.107.8.0/24
- 143.107.14.0/24
- 143.107.27.0/24
- 143.107.44.0/23
- 143.107.64.0/24
- 143.107.84.0/23
- 143.107.86.0/24
- 143.107.88.0/24
- 143.107.0.0/16
- 143.107.154.0/24
- 143.107.178.0/23
- 143.107.248.0/24
- 143.107.252.0/24
- 143.107.253.0/24
- 143.107.254.0/24
- 177.90.32.0/19
- 177.90.64.0/18
- 177.90.128.0/17
- 200.9.95.0/24
- 200.17.16.0/20
- 200.18.53.0/24
- 200.18.106.0/23
- 200.18.108.0/23
- 200.136.0.0/20
Peering ecosystem
4 distinct peers via BGP. The first 4 are listed below.
Blast radius
Count of dependent hostnames if AS28571 disappeared from the routing table.
14,023 hostnames depend on this network.Exact count across all 57 announced prefixes. Snapshot Sat, 25 Jul 2026 13:00:54 GMT.
MOAS / hijack watch
Prefixes routed by AS28571 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.
No active MOAS conflicts. Every prefix announced by AS28571 is unique to AS28571 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS28571.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS28571"})-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN a.name AS asn, n.name AS operator, c.name AS countryOr query Whisper from your own LLM workflow via the Whisper MCP server.