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Autonomous System

AS266250

ESSO FIBRA

Announced IPs
1,024
CIDR prefixes
1
ASN
AS266250

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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
45.6.208.0/22 1.0K
89.6%
ESSO FIBRA BR Rio Grande do Sul Alvorada

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS266250 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
45.6.208.0/22 37,755 2026-07-18 11:00:06
45.6.210.0/23 1,645 2026-07-18 09:59:57
45.6.208.0/23 1,618 2026-07-18 09:59:57

Frequently Asked Questions

What is AS266250?

AS266250 is an Autonomous System Number assigned to ESSO FIBRA. 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 AS266250 announce?

AS266250 announces 1.0K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Brazil.

Who operates AS266250?

AS266250 is operated by ESSO FIBRA. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.

What country is AS266250 registered in?

AS266250 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 11:40:32 UTC
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