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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
45.224.128.0/24 120,518 2026-10-06 23:57:07
45.224.130.0/24 115,780 2026-10-06 23:57:07
45.224.129.0/24 115,605 2026-10-06 23:57:07
45.224.130.0/23 115,366 2026-10-06 23:57:07
102.165.25.0/24 114,660 2026-10-06 23:57:21
96.43.96.0/24 113,474 2026-10-06 23:57:07
181.215.211.0/24 112,573 2026-10-06 23:57:48
170.81.40.0/22 111,078 2026-10-07 00:26:09
170.81.42.0/24 111,044 2026-10-07 00:26:11
170.81.43.0/24 110,943 2026-10-07 00:26:14
170.81.41.0/24 110,887 2026-10-07 00:26:09
181.215.215.0/24 110,659 2026-10-07 00:26:11
170.81.40.0/23 110,620 2026-10-07 00:26:10
170.81.40.0/24 110,458 2026-10-06 23:57:37
170.81.42.0/23 110,457 2026-10-06 23:57:37
181.214.230.0/24 110,053 2026-10-06 23:57:48
181.214.129.0/24 109,701 2026-10-06 23:57:48
181.214.128.0/23 109,652 2026-10-06 23:57:48
181.214.128.0/24 109,400 2026-10-06 23:57:48
45.224.131.0/24 89,128 2026-10-06 23:57:07
45.224.128.0/22 88,198 2026-10-06 23:57:07
45.224.128.0/23 87,828 2026-10-06 23:57:07
31.57.174.0/23 50,213 2026-10-07 00:05:05
31.57.174.0/24 44,102 2026-10-07 00:02:46
31.57.175.0/24 44,024 2026-10-07 00:05:05
74.1.75.0/24 41,373 2026-10-07 00:07:24
74.1.74.0/23 41,219 2026-10-07 00:07:24
74.1.74.0/24 41,015 2026-10-07 00:07:24
74.1.84.0/24 40,498 2026-10-07 00:26:13
74.1.85.0/24 40,402 2026-10-07 00:26:15
74.1.84.0/23 39,728 2026-10-06 23:57:07

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: 2026-10-07 00:39:05 UTC
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