AS21612
FUNDACAO INSTITUTO OSWALDO CRUZ
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Academic allocation +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 157.86.0.0/16 | 65.5K |
3.6%
|
FUNDACAO INSTITUTO OSWALDO CRUZ | BR | Rio de Janeiro | Rio de Janeiro |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS21612 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 157.86.128.0/17 | 91,272 | 2026-09-14 03:02:29 |
| 157.86.0.0/17 | 91,165 | 2026-09-14 03:02:29 |
| 157.86.94.0/23 | 60,394 | 2026-09-14 03:01:27 |
| 157.86.125.0/24 | 44,343 | 2026-09-14 03:01:14 |
| 157.86.127.0/24 | 44,263 | 2026-09-14 03:01:14 |
| 157.86.137.0/24 | 44,123 | 2026-09-14 03:01:14 |
| 157.86.135.0/24 | 44,049 | 2026-09-14 03:01:14 |
| 157.86.122.0/24 | 43,424 | 2026-09-14 03:01:14 |
| 157.86.128.0/24 | 42,756 | 2026-09-14 03:01:14 |
| 157.86.159.0/24 | 41,246 | 2026-09-14 03:01:14 |
| 157.86.158.0/24 | 40,941 | 2026-09-14 03:01:14 |
| 157.86.85.0/24 | 32,603 | 2026-09-14 03:00:49 |
| 157.86.57.0/24 | 29,173 | 2026-09-14 03:00:49 |
| 157.86.61.0/24 | 28,877 | 2026-09-14 03:00:49 |
| 157.86.47.0/24 | 28,651 | 2026-09-14 03:00:49 |
| 157.86.43.0/24 | 28,556 | 2026-09-14 03:00:49 |
| 157.86.236.0/24 | 28,495 | 2026-09-14 03:00:49 |
| 157.86.48.0/23 | 28,447 | 2026-09-14 03:00:49 |
| 157.86.49.0/24 | 27,777 | 2026-09-14 03:00:49 |
| 157.86.140.0/24 | 25,310 | 2026-09-14 03:01:14 |
| 157.86.192.0/18 | 24,936 | 2026-09-14 03:01:14 |
| 157.86.128.0/18 | 24,872 | 2026-09-14 03:01:14 |
| 157.86.0.0/18 | 24,828 | 2026-09-14 03:01:14 |
| 157.86.64.0/18 | 24,777 | 2026-09-14 03:01:14 |
| 157.86.191.0/24 | 24,771 | 2026-09-14 03:01:14 |
| 157.86.94.0/24 | 20,669 | 2026-09-14 03:00:59 |
| 157.86.95.0/24 | 20,662 | 2026-09-14 03:00:59 |
Frequently Asked Questions
What is AS21612?
AS21612 is an Autonomous System Number assigned to FUNDACAO INSTITUTO OSWALDO CRUZ. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS21612 announce?
AS21612 announces 65.5K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Brazil.
Who operates AS21612?
AS21612 is operated by FUNDACAO INSTITUTO OSWALDO CRUZ. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.
What country is AS21612 registered in?
AS21612 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
