Is IP address 138.128.140.81 dangerous?

138.128.140.81 presents moderate risk with a threat level of 5/10. While not critically dangerous, it has been associated with activity. Monitoring and conditional blocking is recommended.

Who owns or operates IP address 138.128.140.81?

IP address 138.128.140.81 is operated by i3D.net B.V (ASN 49544) and is geolocated to US. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 138.128.140.81?

Blocking 138.128.140.81 is advisable for security-sensitive environments. With a threat level of 5/10, consider implementing conditional blocks or rate limiting.

How accurate is this threat assessment for 138.128.140.81?

Our threat assessment for 138.128.140.81 has a confidence score of 9%, based on 1 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

138.128.140.81

IPv4 Public

AS49544

i3D.net B.V

1 Reports

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US Location

i3D.net B.V ASN 49544

1 Reports

Community Data Source

Intermediate Threat

Threat level 5/10 for 138.128.140.81 from 1 reports.

Concerning behaviors alongside normal activity. 9% confidence.

More threatening than 3% of monitored IPs

Threat Categories

WP REST API Abuse 1

WP User Enumeration 1

Reputable Network

This IP is hosted on a network (ASN 49544) with generally good reputation. The ISP i3D.net B.V maintains standard security practices.

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

Security Recommendations

Monitor for behavior pattern changes indicating escalation.

Continue monitoring for emerging patterns.

Reputation Summary

Threat Level 5/10 Medium

Medium

Activity Frequency 0/10 Inactive

Confidence Score 0% Unverified

Date	Categories	Source	Confidence
7. Dec 2025	WP User Enumeration WP REST API Abuse	Community	75%

Basic Information

IP Address: 138.128.140.81
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class B

Geolocation

Country: US
ASN: AS49544
ISP: i3D.net B.V

DNS Information

Reverse DNS: .
PTR Record: Yes
Connection Type: Static

Statistics

Total Reports: 1
First Reported: 7 Dec 2025
Last Reported: 7 Dec 2025, 13:44

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: AS49544

Organization: i3D.net B.V

Country:

Network Threat Assessment

3/10

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 i3D.net B.V (AS49544), which manages 2 IP addresses in our monitoring system. Out of these, 12 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

3 %

Global Threat Ranking

This IP is more threatening than 3% of all IPs in our database.

Low Threat Percentile

Global Comparison

Compared against 833,710 reported IPs worldwide

Threat Level 5/10 avg: 6.3 -

Total Reports 1 avg: 9 --

Network Comparison

Compared against 8 IPs in ASN 49544

Threat Level 5/10 network avg: 6.3 -

Total Reports 1 network avg: 14 --

Network i3D.net B.V has overall threat level 3/10

Geographic Comparison

Compared against 148,365 IPs in US

Threat Level 5/10 country avg: 6.8 -

Total Reports 1 country avg: 18 --

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

Peak Day 0 reports

Daily Average 0 reports/day

Most Active Sunday 1 reports

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

Initial Threat 5/10

Current Threat 5/10

Distribution of threat categories reported over time.

Top Threat Categories

WP User Enumeration 1

WP REST API Abuse 1

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

Hourly Activity

Peak activity at 13:00 with 1 reports

Weekly Activity

Geographic Threat Distribution

757,926 threat incidents tracked globally • Last 24h: 31,264 Logs

FEED

Top Threat Sources

01

United States US THIS IP

148,365 19.6%
02

Brazil BR

111,899 14.8%
03

India IN

87,251 11.5%
04

China CN

46,116 6.1%
05

SC SC

29,253 3.9%
06

Germany DE

18,461 2.4%
07

Netherlands NL

18,032 2.4%
08

Pakistan PK

17,833 2.4%
09

Argentina AR

16,273 2.1%
10

Colombia CO

15,172 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

7 Related IPs

6.4/10 Avg Threat

23% Avg Confidence

3 High Threat

Elevated risk: Multiple related IPs are flagged

Intermediate Threat

Threat Categories

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