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
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →AS266356 — global IP footprint
Cities where AS266356 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 187.121.224.0/21 | 2.0K |
93.0%
|
PRONTO FIBRA LTDA | BR | Tocantins | Palmas |
| 45.234.136.0/22 | 1.0K |
89.6%
|
PRONTO FIBRA LTDA | BR | Tocantins | Palmas |
| 170.239.224.0/22 | 1.0K |
76.5%
|
PRONTO FIBRA LTDA | BR | Tocantins | Palmas |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS266356 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 |
|---|---|---|
| 45.234.139.0/24 | 28,160 | 2026-07-24 15:52:29 |
| 170.239.226.0/24 | 19,201 | 2026-07-23 14:42:57 |
| 170.239.224.0/23 | 17,684 | 2026-07-24 15:53:28 |
| 170.239.226.0/23 | 17,654 | 2026-07-24 15:53:28 |
| 187.121.224.0/21 | 17,574 | 2026-07-24 15:53:40 |
| 45.234.136.0/22 | 17,531 | 2026-07-24 15:52:29 |
| 45.234.138.0/24 | 17,195 | 2026-07-23 14:42:57 |
| 170.239.227.0/24 | 15,022 | 2026-07-23 14:42:57 |
| 170.239.224.0/22 | 13,883 | 2026-07-24 15:53:28 |
| 187.121.225.0/24 | 5,224 | 2026-07-23 05:25:01 |
| 170.239.224.0/24 | 5,167 | 2026-07-23 05:25:01 |
| 187.121.224.0/24 | 5,134 | 2026-07-23 05:25:01 |
| 45.234.136.0/24 | 3,786 | 2026-07-23 05:23:25 |
| 45.234.137.0/24 | 3,541 | 2026-07-23 05:23:25 |
| 187.121.230.0/24 | 5 | 2026-07-16 05:41:20 |
| 187.121.226.0/23 | 5 | 2026-07-16 05:41:20 |
| 187.121.226.0/24 | 5 | 2026-07-16 05:41:20 |
| 187.121.227.0/24 | 5 | 2026-07-16 05:41:20 |
| 187.121.224.0/22 | 5 | 2026-07-16 05:41:20 |
| 187.121.224.0/23 | 5 | 2026-07-16 05:41:20 |
| 187.121.228.0/22 | 5 | 2026-07-16 05:41:20 |
| 187.121.228.0/23 | 5 | 2026-07-16 05:41:20 |
| 187.121.229.0/24 | 5 | 2026-07-16 05:41:20 |
| 187.121.228.0/24 | 5 | 2026-07-16 05:41:20 |
| 45.234.138.0/23 | 5 | 2026-07-16 05:41:20 |
| 187.121.230.0/23 | 5 | 2026-07-16 05:41:20 |
| 187.121.231.0/24 | 5 | 2026-07-16 05:41:20 |
| 170.239.225.0/24 | 5 | 2026-07-16 05:41:20 |
| 45.234.136.0/23 | 5 | 2026-07-16 05:41:20 |
Frequently Asked Questions
What is AS266356?
AS266356 is an Autonomous System Number assigned to PRONTO FIBRA LTDA. 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 AS266356 announce?
AS266356 announces 4.1K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Brazil.
Who operates AS266356?
AS266356 is operated by PRONTO FIBRA LTDA. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.
What country is AS266356 registered in?
AS266356 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
