Is IP address 191.181.10.23 dangerous?

Yes, 191.181.10.23 is considered dangerous with a threat level of 8/10. It has been reported 4 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 191.181.10.23?

IP address 191.181.10.23 is operated by Claro NXT Telecomunicacoes Ltda (ASN 28573) and is geolocated to BR. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 191.181.10.23?

Yes, blocking 191.181.10.23 is strongly recommended. With a threat level of 8/10 and 4 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 191.181.10.23?

Our threat assessment for 191.181.10.23 has a confidence score of 50%, based on 4 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

191.181.10.23

IPv4 Public

AS28573

Claro NXT Telecomunicacoes Ltda

4 Reports

BR Location

Claro NXT Telecomunicacoe... ASN 28573

4 Reports

Honeypot Data Source

Elevated Risk

Elevated threat level 8/10 for IP 191.181.10.23 from 4 reported incidents.

Behavioral profile indicates cyber threat activity with 50% confidence.

More threatening than 77% of monitored IPs

Threat Categories

SSH 3

Technical Details

SSH attacks attempt to gain server access through password guessing or exploitation of SSH vulnerabilities.

Recommended Mitigations

Use key-based authentication, change default ports, implement fail2ban, and disable root login.

Reputable Network

This IP is hosted on a network (ASN 28573) with generally good reputation. The ISP Claro NXT Telecomunicacoes Ltda maintains standard security practices.

The malicious activity may represent an isolated compromised system rather than systematic abuse.

Security Recommendations

Enhanced monitoring recommended. Review logs for interactions with this IP.

Continue monitoring for emerging patterns.

Reputation Summary

Threat Level 8/10 High

Critical

Activity Frequency 6/10 Moderate

Confidence Score 28% Medium Confidence

Confidence History

25. Feb 2026 - 26. Feb 2026

50% Current

Stable Trend

Date	Categories	Source	Confidence
26. Feb 2026	SSH	Honeypot	75%
26. Feb 2026	SSH	Honeypot	75%
25. Feb 2026	SSH	Honeypot	75%

Basic Information

IP Address: 191.181.10.23
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class B

Geolocation

Country: BR
ASN: AS28573
ISP: Claro NXT Telecomunicacoes Ltda

DNS Information

Reverse DNS: bfb50a17.virtua.com.br
PTR Record: Yes
Connection Type: Static

Statistics

Total Reports: 4
First Reported: 25 Feb 2026
Last Reported: 26 Feb 2026, 06:34

Network Reputation

Analysis of the entire network (ASN) that this IP address belongs to, providing context about the hosting provider and network-wide threat patterns.

Network Identity

ASN: AS28573

Organization: Claro NXT Telecomunicacoes Ltda

Country:

Network Threat Assessment

3/10

This network appears to be relatively clean with very low threat indicators.

Network Statistics

Total IPs Monitored

600

Total Reports

9.5

Reports per IP

Network Context

This IP address belongs to Claro NXT Telecomunicacoes Ltda (AS28573), which manages 63 IP addresses in our monitoring system. Out of these, 600 have been reported for suspicious activities, resulting in a network-wide threat level of 3/10.

Network status: This network appears to be well-maintained with low threat indicators.

Comparative Analysis

How this IP compares to others in our threat intelligence database

77 %

Global Threat Ranking

This IP is more threatening than 77% of all IPs in our database.

High Threat Percentile

Global Comparison

Compared against 199,465 reported IPs worldwide

Threat Level 8/10 avg: 5.3 ++

Total Reports 4 avg: 23 --

Network Comparison

Compared against 562 IPs in ASN 28573

Threat Level 8/10 network avg: 5.3 +

Total Reports 4 network avg: 2 ++

Network Claro NXT Telecomunicacoes Ltda has overall threat level 3/10

Geographic Comparison

Compared against 10,256 IPs in BR

Threat Level 8/10 country avg: 5.5 +

Total Reports 4 country avg: 14 --

Daily report activity over the last 30 days showing patterns and peaks.

Peak Day 0 reports

Daily Average 0 reports/day

Most Active Thursday 2 reports

Evolution of threat level over time based on reported categories and frequency.

Initial Threat 6/10

Current Threat 6/10

Distribution of threat categories reported over time.

Top Threat Categories

SSH 3

Activity patterns showing when this IP is most active during the day and week.

Hourly Activity

Peak activity at 04:00 with 1 reports

Weekly Activity

Geographic Threat Distribution

187,140 threat incidents tracked globally • Last 24h: 19,043 Logs

FEED

Top Threat Sources

01

United States US

38,446 20.5%
02

India IN

29,023 15.5%
03

China CN

26,021 13.9%
04

Brazil BR THIS IP

10,256 5.5%
05

Germany DE

7,142 3.8%
06

Singapore SG

6,476 3.5%
07

Indonesia ID

5,539 3%
08

Russia RU

4,703 2.5%
09

Pakistan PK

4,654 2.5%
10

Netherlands NL

4,356 2.3%

+40 more countries

THREAT LEVEL

LOW MED HIGH

IPs from the same Autonomous System (AS) network provider.

20 Related IPs

8.4/10 Avg Threat

69% Avg Confidence

19 High Threat

High-risk network: Majority of related IPs are flagged

Elevated Risk

Threat Categories

Technical Details

Recommended Mitigations

Reputable Network

Security Recommendations

Basic Information

Geolocation

DNS Information

Statistics

Network Reputation

Network Identity

Network Threat Assessment

Network Statistics

Network Context

Global Threat Ranking

Top Threat Categories

Hourly Activity

Weekly Activity

FEED

Top Threat Sources

JSON Report

Firewall Rules

iptables / netfilter

UFW (Ubuntu)

Windows Firewall

Cloudflare

nginx

Apache .htaccess

PDF Report

Analyzed high-risk IP addresses

reportedIP

Parkstraße 19, 80339 München

Consultation

+49-89-215505888

Report a IP

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