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Autonomous System

AS28351

Claro NXT Telecomunicacoes Ltda

Announced IPs
4,096
CIDR prefixes
1
ASN
AS28351

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.

67/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 100-1000Mbps
Geographic scope South America
Traffic ratio Balanced
Peering policy Restrictive

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
189.51.176.0/20 4.1K
0.0%
Claro NXT Telecomunicacoes Ltda BR

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS28351 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
189.51.176.0/20 109,845 2026-07-24 15:46:52
189.51.176.0/21 17,656 2026-07-24 15:23:28
189.51.184.0/21 17,643 2026-07-24 15:23:28

Frequently Asked Questions

What is AS28351?

AS28351 is an Autonomous System Number assigned to Claro NXT Telecomunicacoes Ltda. 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 AS28351 announce?

AS28351 announces 4.1K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Brazil.

Who operates AS28351?

AS28351 is operated by Claro NXT Telecomunicacoes Ltda. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.

What country is AS28351 registered in?

AS28351 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-24 15:55:31 UTC
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