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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
45.224.128.0/24 121,259 2026-10-15 09:06:35
45.224.130.0/24 116,521 2026-10-15 09:06:35
45.224.129.0/24 116,363 2026-10-15 09:06:35
45.224.130.0/23 116,119 2026-10-15 09:06:35
102.165.25.0/24 115,406 2026-10-15 09:06:35
96.43.96.0/24 114,227 2026-10-15 09:06:35
181.215.211.0/24 113,309 2026-10-15 08:24:31
170.81.40.0/22 111,845 2026-10-15 08:24:31
170.81.42.0/24 111,808 2026-10-15 08:58:04
170.81.43.0/24 111,692 2026-10-15 08:24:31
170.81.41.0/24 111,653 2026-10-15 08:24:31
181.215.215.0/24 111,422 2026-10-15 08:24:31
170.81.40.0/23 111,385 2026-10-15 08:24:31
170.81.42.0/23 111,196 2026-10-15 08:24:31
170.81.40.0/24 111,192 2026-10-15 08:24:31
181.214.230.0/24 110,786 2026-10-15 08:24:31
181.214.129.0/24 110,445 2026-10-15 08:58:04
181.214.128.0/23 110,391 2026-10-15 08:24:31
181.214.128.0/24 110,134 2026-10-15 08:24:31
45.224.131.0/24 89,880 2026-10-15 09:06:35
45.224.128.0/22 88,949 2026-10-15 09:06:35
45.224.128.0/23 88,583 2026-10-15 09:06:35
31.57.174.0/23 50,865 2026-10-15 09:05:46
31.57.174.0/24 44,679 2026-10-15 09:05:46
31.57.175.0/24 44,604 2026-10-15 09:05:46
74.1.75.0/24 41,945 2026-10-15 09:05:46
74.1.74.0/23 41,860 2026-10-15 09:05:46
74.1.74.0/24 41,592 2026-10-15 09:05:46
74.1.84.0/24 41,065 2026-10-15 09:06:28
74.1.85.0/24 40,958 2026-10-15 09:06:28
74.1.84.0/23 40,322 2026-10-15 09:06:40

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: 2026-10-15 09:24:05 UTC
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