Is IP address 138.99.81.6 dangerous?

Yes, 138.99.81.6 is considered dangerous with a threat level of 7/10. It has been reported 2 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 138.99.81.6?

IP address 138.99.81.6 is operated by MaxNet Telecom (ASN 271596) and is geolocated to BR. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 138.99.81.6?

Yes, blocking 138.99.81.6 is strongly recommended. With a threat level of 7/10 and 2 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 138.99.81.6?

Our threat assessment for 138.99.81.6 has a confidence score of 5%, based on 2 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

138.99.81.6

IPv4 Public

AS271596

MaxNet Telecom

2 Reports

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Brazil Location

MaxNet Telecom ASN 271596

2 Reports

Mixed Data Source

Substantial Risk

Threat level 7/10 for 138.99.81.6 based on 2 documented incidents.

Consistent suspicious behavior patterns. 5% confidence rating.

More threatening than 76% of monitored IPs

Threat Categories

Bad Web Bot 1

WP Content Scraping 1

WP Login Brute Force 1

Brute-Force 1

Technical Details

Bad web bots ignore robots.txt, scrape content aggressively, and may probe for vulnerabilities.

Recommended Mitigations

Implement bot detection, rate limiting, and use services like Cloudflare Bot Management.

Behavioral Analysis

Activity Pattern: Consistent Activity

Steady malicious activity over less than a day indicates persistent threat actor operations.

First Observed 19. October 2026

Last Activity 19. October 2026

Recent (7 days) 1 incidents

High-Risk Network Association

This IP belongs to a network (ASN 271596) with elevated threat levels. The ISP MaxNet Telecom hosts multiple reported malicious addresses, suggesting systemic security issues or permissive policies.

Network-wide patterns may indicate this is part of a larger malicious infrastructure.

Security Recommendations

Configure firewall rules and intrusion detection alerts.

Long-term blocking recommended.

Reputation Summary

Threat Level 7/10 High

High

Activity Frequency 0/10 Inactive

Confidence Score 36% Medium Confidence

Confidence History

16. Jul 2026 - 19. Oct 2026

5% Current

Stable Trend

Date	Categories	Source	Confidence
19. Oct 2026	Bad Web Bot WP Content Scraping	Honeypot	75%
18. Jul 2026	WP Login Brute Force	Honeypot	75%
16. Jul 2026	Brute-Force	Community	75%

Basic Information

IP Address: 138.99.81.6
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class B

Geolocation

Country: BR
ASN: AS271596
ISP: MaxNet Telecom

DNS Information

Reverse DNS: None
PTR Record: No
Connection Type: Static

Statistics

Total Reports: 2
First Reported: 16 Jul 2026
Last Reported: 18 Jul 2026, 18:11

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: AS271596

Organization: MaxNet Telecom

Country:

Network Threat Assessment

8/10

This network has a high threat level with significant malicious activity reported across multiple IPs.

Network Statistics

Total IPs Monitored

Total Reports

Reports per IP

Network Context

This IP address belongs to MaxNet Telecom (AS271596), which manages 1 IP addresses in our monitoring system. Out of these, 76 have been reported for suspicious activities, resulting in a network-wide threat level of 8/10.

Network warning: This network has elevated threat levels. Exercise caution when interacting with IPs from this ASN.

Comparative Analysis

How this IP compares to others in our threat intelligence database

76 %

Global Threat Ranking

This IP is more threatening than 76% of all IPs in our database.

High Threat Percentile

Global Comparison

Compared against 1,106,564 reported IPs worldwide

Threat Level 7/10 avg: 6.1 =

Total Reports 2 avg: 8 --

Network Comparison

Compared against 10 IPs in ASN 271596

Threat Level 7/10 network avg: 6.5 =

Total Reports 2 network avg: 18 --

Network MaxNet Telecom has overall threat level 8/10

Geographic Comparison

Compared against 197,015 IPs in BR

Threat Level 7/10 country avg: 5.3 +

Total Reports 2 country avg: 2 =

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

Peak Day 19 Oct 2026 1 reports

Daily Average 0 reports/day

Most Active Monday 1 reports

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

Initial Threat 6/10

Current Threat 5/10

Distribution of threat categories reported over time.

Top Threat Categories

Brute-Force 1

WP Login Brute Force 1

Bad Web Bot 1

WP Content Scraping 1

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

Hourly Activity

Peak activity at 00:00 with 1 reports

Weekly Activity

Geographic Threat Distribution

1,008,694 threat incidents tracked globally • Last 24h: 29,673 Logs

FEED

Top Threat Sources

01

Brazil BR THIS IP

197,015 19.5%
02

United States US

188,357 18.7%
03

India IN

95,267 9.4%
04

China CN

47,960 4.8%
05

Argentina AR

31,501 3.1%
06

SC SC

29,345 2.9%
07

Mexico MX

20,701 2.1%
08

Russia RU

20,522 2%
09

Germany DE

20,449 2%
10

Colombia CO

20,384 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

9 Related IPs

6.4/10 Avg Threat

23% Avg Confidence

3 High Threat

Elevated risk: Multiple related IPs are flagged

Substantial Risk

Threat Categories

Technical Details

Recommended Mitigations

Behavioral Analysis

High-Risk Network Association

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