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Autonomous System

AS266604

COMPANHIA ENERGETICA DE MINAS GERAIS

Announced IPs
512
CIDR prefixes
1
ASN
AS266604

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 v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
128.201.18.0/23 512
0.4%
COMPANHIA ENERGETICA DE MINAS GERAIS BR

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS266604 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
128.201.18.0/24 62,509 2026-08-03 05:44:30
128.201.18.0/23 58,401 2026-08-03 05:44:30
128.201.19.0/24 49,974 2026-08-03 05:55:29

Frequently Asked Questions

What is AS266604?

AS266604 is an Autonomous System Number assigned to COMPANHIA ENERGETICA DE MINAS GERAIS. 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 AS266604 announce?

AS266604 announces 512 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Brazil.

Who operates AS266604?

AS266604 is operated by COMPANHIA ENERGETICA DE MINAS GERAIS. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.

What country is AS266604 registered in?

AS266604 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-08-03 06:10:31 UTC
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