Is IP address 143.255.205.159 dangerous?

Yes, 143.255.205.159 is considered dangerous with a threat level of 8/10. It has been reported 13 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 143.255.205.159?

IP address 143.255.205.159 is operated by Fibralink LTDA (ASN 264496) and is geolocated to BR. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 143.255.205.159?

Yes, blocking 143.255.205.159 is strongly recommended. With a threat level of 8/10 and 13 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 143.255.205.159?

Our threat assessment for 143.255.205.159 has a confidence score of 81%, based on 13 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

143.255.205.159

IPv4 Public

AS264496

Fibralink LTDA

13 Reports

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Brazil Location

Fibralink LTDA ASN 264496

13 Reports

Mixed Data Source

High Risk

IP 143.255.205.159 rated at threat level 8/10 based on 13 security reports.

Pattern analysis reveals concerning activity. Confidence: 81%.

More threatening than 90% of monitored IPs

Threat Categories

Brute-Force 12

Web App Attack 7

WP Login Brute Force 1

Technical Details

Brute-force attacks systematically attempt password combinations against authentication systems.

Recommended Mitigations

Implement rate limiting, account lockout policies, multi-factor authentication, and fail2ban.

Behavioral Analysis

Activity Pattern: Consistent Activity

Steady malicious activity over 3 weeks indicates persistent threat actor operations.

First Observed 14. September 2026

Last Activity 10. October 2026

Recent (7 days) 2 incidents

Reputable Network

This IP is hosted on a network (ASN 264496) with generally good reputation. The ISP Fibralink LTDA maintains standard security practices.

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

Security Recommendations

Monitor closely and consider blocking. Escalation potential detected.

Long-term blocking recommended.

Reputation Summary

Threat Level 8/10 High

Critical

Activity Frequency 4/10 Low

Confidence Score 80% Verified

Confidence History

16. May 2026 - 10. Oct 2026

81% Current

Stable Trend

Date	Categories	Source	Confidence
10. Oct 2026 New	Brute-Force	Community	75%
10. Oct 2026 New	Brute-Force Web App Attack	Community	75%
14. Sep 2026	Brute-Force Web App Attack	Honeypot	75%
14. Sep 2026	Brute-Force Web App Attack	Honeypot	75%
14. Sep 2026	Brute-Force Web App Attack	Honeypot	75%
6. Sep 2026	Brute-Force Web App Attack	Honeypot	75%
6. Sep 2026	Brute-Force Web App Attack	Honeypot	75%
6. Sep 2026	Brute-Force Web App Attack	Honeypot	75%
5. Sep 2026	Brute-Force	Community	75%
28. Jun 2026	WP Login Brute Force	Honeypot	75%
26. May 2026	Brute-Force	Community	75%
17. May 2026	Brute-Force	Community	75%
16. May 2026	Brute-Force	Community	75%

Basic Information

IP Address: 143.255.205.159
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class B

Geolocation

Country: BR
ASN: AS264496
ISP: Fibralink LTDA

DNS Information

Reverse DNS: device-143-255-205-159.fibralink.net.br
PTR Record: Yes
Connection Type: Dynamic

Statistics

Total Reports: 13
First Reported: 16 May 2026
Last Reported: 10 Oct 2026, 22:28

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: AS264496

Organization: Fibralink LTDA

Country:

Network Threat Assessment

0/10

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

Network Statistics

Total IPs Monitored

Total Reports

Reports per IP

Network Context

This IP address belongs to Fibralink LTDA (AS264496), which manages 1 IP addresses in our monitoring system. Out of these, 6 have been reported for suspicious activities, resulting in a network-wide threat level of 0/10.

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

90 %

Global Threat Ranking

This IP is more threatening than 90% of all IPs in our database.

Top 10% Most Dangerous

Global Comparison

Compared against 848,310 reported IPs worldwide

Threat Level 8/10 avg: 6.3 +

Total Reports 13 avg: 9 +

Network Comparison

Compared against 83 IPs in ASN 264496

Threat Level 8/10 network avg: 5.8 +

Total Reports 13 network avg: 1 ++

Network Fibralink LTDA has overall threat level 0/10

Geographic Comparison

Compared against 112,750 IPs in BR

Threat Level 8/10 country avg: 5.4 +

Total Reports 13 country avg: 3 ++

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

Peak Day 14 Sep 2026 3 reports

Daily Average 0.2 reports/day

Most Active Sunday 5 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

Brute-Force 12

Web App Attack 7

WP Login Brute Force 1

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

Hourly Activity

Peak activity at 17:00 with 6 reports

Weekly Activity

Geographic Threat Distribution

770,865 threat incidents tracked globally • Last 24h: 27,930 Logs

FEED

Top Threat Sources

01

United States US

150,561 19.5%
02

Brazil BR THIS IP

112,751 14.6%
03

India IN

89,728 11.6%
04

China CN

46,531 6%
05

SC SC

29,265 3.8%
06

Germany DE

18,811 2.4%
07

Pakistan PK

18,347 2.4%
08

Netherlands NL

18,245 2.4%
09

Argentina AR

16,643 2.2%
10

Colombia CO

15,321 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

6.6/10 Avg Threat

24% Avg Confidence

8 High Threat

Elevated risk: Multiple related IPs are flagged

High Risk

Threat Categories

Technical Details

Recommended Mitigations

Behavioral Analysis

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

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