Is IP address 187.72.159.71 dangerous?

Yes, 187.72.159.71 is considered dangerous with a threat level of 8/10. It has been reported 6 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 187.72.159.71?

IP address 187.72.159.71 is operated by ALGAR TELECOM SA (ASN 16735) and is geolocated to BR. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 187.72.159.71?

Yes, blocking 187.72.159.71 is strongly recommended. With a threat level of 8/10 and 6 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 187.72.159.71?

Our threat assessment for 187.72.159.71 has a confidence score of 75%, based on 6 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

187.72.159.71

IPv4 Public

AS16735

ALGAR TELECOM SA

6 Reports

Brazil Location

ALGAR TELECOM SA ASN 16735

6 Reports

Mixed Data Source

Elevated Risk

Elevated threat level 8/10 for IP 187.72.159.71 from 6 reported incidents.

Behavioral profile indicates cyber threat activity with 75% confidence.

More threatening than 89% of monitored IPs

Threat Categories

Brute-Force 5

Web App Attack 3

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 1 days indicates persistent threat actor operations.

First Observed 19. September 2026

Last Activity 20. September 2026

Recent (7 days) 5 incidents

Reputable Network

This IP is hosted on a network (ASN 16735) with generally good reputation. The ISP ALGAR TELECOM SA 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.

Long-term blocking recommended.

Reputation Summary

Threat Level 8/10 High

Critical

Activity Frequency 8/10 High

Confidence Score 75% High Confidence

Confidence History

17. May 2026 - 20. Sep 2026

75% Current

Stable Trend

Date	Categories	Source	Confidence
20. Sep 2026 New	Brute-Force Web App Attack	Honeypot	75%
20. Sep 2026 New	Brute-Force Web App Attack	Honeypot	75%
20. Sep 2026 New	Brute-Force Web App Attack	Honeypot	75%
19. Sep 2026	Brute-Force	Community	75%
19. Sep 2026	WP Login Brute Force	Honeypot	75%
17. May 2026	Brute-Force	Community	75%

Basic Information

IP Address: 187.72.159.71
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class B

Geolocation

Country: BR
ASN: AS16735
ISP: ALGAR TELECOM SA

DNS Information

Reverse DNS: 187-072-159-071.static.ctbctelecom.com.br
PTR Record: Yes
Connection Type: Dynamic

Statistics

Total Reports: 6
First Reported: 17 May 2026
Last Reported: 20 Sep 2026, 01:24

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: AS16735

Organization: ALGAR TELECOM SA

Country:

Network Threat Assessment

1/10

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

Network Statistics

Total IPs Monitored

789

Total Reports

14.9

Reports per IP

Network Context

This IP address belongs to ALGAR TELECOM SA (AS16735), which manages 53 IP addresses in our monitoring system. Out of these, 789 have been reported for suspicious activities, resulting in a network-wide threat level of 1/10.

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

89 %

Global Threat Ranking

This IP is more threatening than 89% of all IPs in our database.

High Threat Percentile

Global Comparison

Compared against 767,697 reported IPs worldwide

Threat Level 8/10 avg: 5.8 +

Total Reports 6 avg: 9 -

Network Comparison

Compared against 419 IPs in ASN 16735

Threat Level 8/10 network avg: 5.6 +

Total Reports 6 network avg: 3 ++

Network ALGAR TELECOM SA has overall threat level 1/10

Geographic Comparison

Compared against 109,430 IPs in BR

Threat Level 8/10 country avg: 5.2 ++

Total Reports 6 country avg: 3 ++

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

Peak Day 20 Sep 2026 3 reports

Daily Average 0.2 reports/day

Most Active Sunday 4 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 5

Web App Attack 3

WP Login Brute Force 1

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

Hourly Activity

Peak activity at 01:00 with 3 reports

Weekly Activity

Geographic Threat Distribution

698,367 threat incidents tracked globally • Last 24h: 22,995 Logs

FEED

Top Threat Sources

01

United States US

134,954 19.3%
02

Brazil BR THIS IP

109,430 15.7%
03

India IN

75,806 10.9%
04

China CN

43,125 6.2%
05

SC SC

29,184 4.2%
06

Netherlands NL

16,474 2.4%
07

Argentina AR

16,068 2.3%
08

Germany DE

15,824 2.3%
09

Pakistan PK

15,213 2.2%
10

Colombia CO

15,077 2.2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

9.7/10 Avg Threat

80% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

Elevated 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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