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Autonomous System

AS266400

Ferenz Networks

Announced IPs
5,376
CIDR prefixes
11
ASN
AS266400

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.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type NSP
Geographic scope Global
Traffic ratio Balanced
Peering policy Selective
IRR record AS266400:AS-FERENZ

Present at 7 internet exchanges: IX.br (PTT.br) São Paulo: ATM/MPLA, IX.br (PTT.br) Florianópolis: ATM/MPLA, IX.br (PTT.br) Brasília: ATM/MPLA, IX.br (PTT.br) Curitiba: ATM/MPLA, PIT Paraguay, IX.br (PTT.br) Fortaleza: ATM/MPLA, IX.br (PTT.br) Porto Alegre: ATM/MPLA

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS266400 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
45.224.128.0/24 120,958 2026-10-14 02:05:03
45.224.130.0/24 116,220 2026-10-14 02:05:03
45.224.129.0/24 116,055 2026-10-14 02:05:03
45.224.130.0/23 115,812 2026-10-14 02:05:03
102.165.25.0/24 115,103 2026-10-14 02:05:20
96.43.96.0/24 113,920 2026-10-14 02:05:20
181.215.211.0/24 113,017 2026-10-14 02:05:20
170.81.40.0/22 111,549 2026-10-14 02:05:03
170.81.42.0/24 111,508 2026-10-14 02:05:03
170.81.43.0/24 111,397 2026-10-14 02:05:03
170.81.41.0/24 111,357 2026-10-14 02:05:03
181.215.215.0/24 111,126 2026-10-14 02:05:20
170.81.40.0/23 111,089 2026-10-14 02:05:03
170.81.42.0/23 110,899 2026-10-14 02:05:03
170.81.40.0/24 110,898 2026-10-14 02:05:03
181.214.230.0/24 110,495 2026-10-14 02:05:20
181.214.129.0/24 110,147 2026-10-14 02:05:20
181.214.128.0/23 110,097 2026-10-14 02:05:20
181.214.128.0/24 109,842 2026-10-14 02:05:20
45.224.131.0/24 89,575 2026-10-14 02:05:03
45.224.128.0/22 88,646 2026-10-14 02:05:03
45.224.128.0/23 88,279 2026-10-14 02:05:03
31.57.174.0/23 50,739 2026-10-14 02:01:53
31.57.174.0/24 44,555 2026-10-14 02:01:53
31.57.175.0/24 44,478 2026-10-14 02:01:53
74.1.75.0/24 41,822 2026-10-14 02:01:53
74.1.74.0/23 41,739 2026-10-14 02:01:53
74.1.74.0/24 41,470 2026-10-14 02:01:53
74.1.84.0/24 40,957 2026-10-14 02:05:07
74.1.85.0/24 40,853 2026-10-14 02:05:07
74.1.84.0/23 40,219 2026-10-14 02:05:07

Frequently Asked Questions

What is AS266400?

AS266400 is an Autonomous System Number assigned to Ferenz Networks. 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 AS266400 announce?

AS266400 announces 5.4K IPv4 addresses distributed across 11 routed CIDR prefixes. The network is registered in Brazil.

Who operates AS266400?

AS266400 is operated by Ferenz Networks. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.

What country is AS266400 registered in?

AS266400 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-10-14 02:39:06 UTC
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