AS1251
FUNDACAO DE AMPARO A PESQUISA DO ESTADO SAO PAULO
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
- Enterprise allocation +4
- Trust score 69 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 1 internet exchange: IX.br (PTT.br) São Paulo: ATM/MPLA
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS1251 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 |
|---|---|---|
| 200.136.80.0/24 | 176,660 | 2026-11-14 22:21:42 |
| 200.18.48.0/20 | 58,493 | 2026-11-14 22:21:02 |
| 200.136.110.0/24 | 57,262 | 2026-11-14 22:21:02 |
| 200.18.252.0/24 | 51,565 | 2026-11-14 22:21:02 |
| 200.18.52.0/24 | 46,216 | 2026-11-05 19:52:25 |
| 200.18.48.0/23 | 45,141 | 2026-11-14 22:21:02 |
| 200.136.160.0/20 | 44,866 | 2026-11-14 22:21:02 |
| 200.136.16.0/20 | 44,611 | 2026-11-14 22:21:02 |
| 200.18.110.0/23 | 44,583 | 2026-11-14 22:21:02 |
| 200.136.184.0/22 | 44,539 | 2026-11-14 22:21:02 |
| 200.136.182.0/23 | 44,506 | 2026-11-14 22:21:02 |
| 200.136.64.0/19 | 44,455 | 2026-11-14 22:21:02 |
| 200.136.176.0/24 | 44,454 | 2026-11-14 22:21:02 |
| 200.144.68.0/22 | 44,027 | 2026-11-14 22:21:02 |
| 143.108.0.0/16 | 43,995 | 2026-11-14 22:21:02 |
| 200.144.64.0/22 | 43,937 | 2026-11-14 22:21:02 |
| 200.144.128.0/20 | 43,907 | 2026-11-14 22:21:02 |
| 200.136.96.0/20 | 43,896 | 2026-11-14 22:21:02 |
| 200.144.118.0/24 | 43,879 | 2026-11-14 22:21:02 |
| 200.136.32.0/19 | 43,862 | 2026-11-14 22:21:02 |
| 200.144.32.0/20 | 43,861 | 2026-11-14 22:21:02 |
| 200.144.120.0/22 | 43,820 | 2026-11-14 22:21:02 |
| 200.144.119.0/24 | 43,808 | 2026-11-14 22:21:02 |
| 200.18.240.0/20 | 43,789 | 2026-11-14 22:21:02 |
| 200.144.78.0/23 | 43,726 | 2026-11-14 22:21:02 |
| 143.108.12.0/24 | 43,716 | 2026-11-14 22:21:02 |
| 200.144.126.0/23 | 43,673 | 2026-11-14 22:21:02 |
| 200.144.124.0/24 | 43,644 | 2026-11-14 22:21:02 |
| 200.19.228.0/23 | 43,554 | 2026-11-14 22:21:02 |
| 200.19.224.0/22 | 43,544 | 2026-11-14 22:21:02 |
| 143.108.8.0/22 | 43,360 | 2026-11-14 22:21:02 |
| 200.10.179.0/24 | 43,264 | 2026-11-14 22:21:02 |
| 200.6.42.0/24 | 43,204 | 2026-11-14 22:21:02 |
| 200.10.178.0/24 | 43,102 | 2026-11-14 22:21:02 |
| 200.19.80.0/20 | 43,065 | 2026-11-14 22:21:02 |
| 200.10.178.0/23 | 43,032 | 2026-11-14 22:21:02 |
| 200.144.80.0/20 | 42,985 | 2026-11-14 22:21:02 |
| 200.136.88.0/24 | 41,447 | 2026-11-14 22:21:02 |
| 200.144.125.0/24 | 40,436 | 2026-11-14 22:21:02 |
| 200.136.26.0/23 | 11,976 | 2026-11-14 22:47:00 |
| 200.136.81.0/24 | 3,053 | 2026-11-13 20:13:06 |
| 200.136.37.0/24 | 1 | 2026-08-16 15:36:36 |
| 200.19.92.0/24 | 1 | 2026-08-16 15:36:36 |
| 200.144.68.0/23 | 1 | 2026-08-16 15:36:36 |
| 200.144.128.0/21 | 1 | 2026-08-16 15:36:36 |
| 200.144.39.0/24 | 1 | 2026-08-16 15:36:36 |
| 200.136.161.0/24 | 1 | 2026-08-16 15:36:36 |
| 200.144.136.0/21 | 1 | 2026-08-16 15:36:36 |
| 200.144.121.0/24 | 1 | 2026-08-16 15:36:36 |
| 143.108.30.0/24 | 1 | 2026-08-16 15:36:21 |
Showing top 50 of 67 announced prefixes by sample volume.
Frequently Asked Questions
What is AS1251?
AS1251 is an Autonomous System Number assigned to FUNDACAO DE AMPARO A PESQUISA DO ESTADO SAO PAULO. 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 AS1251 announce?
AS1251 announces 121.6K IPv4 addresses distributed across 38 routed CIDR prefixes. The network is registered in Brazil.
Who operates AS1251?
AS1251 is operated by FUNDACAO DE AMPARO A PESQUISA DO ESTADO SAO PAULO. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.
What country is AS1251 registered in?
AS1251 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
