Is IP address 128.134.0.91 dangerous?

Yes, 128.134.0.91 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 128.134.0.91?

IP address 128.134.0.91 is operated by Korea Telecom (ASN 4766) and is geolocated to KR. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 128.134.0.91?

Yes, blocking 128.134.0.91 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 128.134.0.91?

Our threat assessment for 128.134.0.91 has a confidence score of 51%, based on 6 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

128.134.0.91

IPv4 Public

AS4766

Korea Telecom

6 Reports

Is this your IP address? If the cause is fixed, you can request removal. Free of charge, usually decided within 48 hours. Request delisting

South Korea Location

Korea Telecom ASN 4766

6 Reports

Mixed Data Source

High Risk

IP 128.134.0.91 rated at threat level 8/10 based on 6 security reports.

Pattern analysis reveals concerning activity. Confidence: 51%.

More threatening than 92% of monitored IPs

Threat Categories

FTP Brute-Force 6

Brute-Force 2

Technical Details

FTP brute-force attacks systematically attempt to guess FTP credentials to gain unauthorized file access.

Recommended Mitigations

Disable FTP in favor of SFTP, implement fail2ban, and enforce strong password policies.

Behavioral Analysis

Activity Pattern: Consistent Activity

Steady malicious activity over 2 weeks indicates persistent threat actor operations.

First Observed 31. October 2026

Last Activity 14. November 2026

Recent (7 days) 1 incidents

Moderate Network Risk

The network hosting this IP (ASN 4766, operated by Korea Telecom) shows moderate threat indicators. Some concerning activity has been detected from neighboring addresses.

Consider the network context when assessing this individual IP.

Security Recommendations

Monitor closely and consider blocking. Escalation potential detected.

Long-term blocking recommended.

Reputation Summary

Threat Level 8/10 High

Critical

Activity Frequency 2/10 Very Low

Confidence Score 51% High Confidence

Confidence History

24. Jul 2026 - 14. Nov 2026

51% Current

Stable Trend

Date	Categories	Source	Confidence
14. Nov 2026 New	FTP Brute-Force Brute-Force	Community	75%
31. Oct 2026	FTP Brute-Force Brute-Force	Community	75%
10. Sep 2026	FTP Brute-Force	Honeypot	75%
27. Aug 2026	FTP Brute-Force	Honeypot	75%
6. Aug 2026	FTP Brute-Force	Honeypot	75%
24. Jul 2026	FTP Brute-Force	Honeypot	75%

Basic Information

IP Address: 128.134.0.91
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class B

Geolocation

Country: KR
ASN: AS4766
ISP: Korea Telecom

DNS Information

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

Statistics

Total Reports: 6
First Reported: 24 Jul 2026
Last Reported: 14 Nov 2026, 08:48

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: AS4766

Organization: Korea Telecom

Country:

Network Threat Assessment

5/10

This network has low threat indicators with minimal suspicious activity.

Network Statistics

930

Total IPs Monitored

17,918

Total Reports

19.3

Reports per IP

Network Context

This IP address belongs to Korea Telecom (AS4766), which manages 930 IP addresses in our monitoring system. Out of these, 17,918 have been reported for suspicious activities, resulting in a network-wide threat level of 5/10.

Network notice: This network shows some suspicious activity patterns. Monitor interactions with IPs from this ASN.

Comparative Analysis

How this IP compares to others in our threat intelligence database

92 %

Global Threat Ranking

This IP is more threatening than 92% of all IPs in our database.

Top 10% Most Dangerous

Global Comparison

Compared against 1,352,150 reported IPs worldwide

Threat Level 8/10 avg: 6.0 +

Total Reports 6 avg: 7 =

Network Comparison

Compared against 2,573 IPs in ASN 4766

Threat Level 8/10 network avg: 7.1 =

Total Reports 6 network avg: 11 -

Network Korea Telecom has overall threat level 5/10

Geographic Comparison

Compared against 5,835 IPs in KR

Threat Level 8/10 country avg: 7.1 =

Total Reports 6 country avg: 11 -

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

Peak Day 31 Oct 2026 1 reports

Daily Average 0.1 reports/day

Most Active Thursday 3 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

FTP Brute-Force 6

Brute-Force 2

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

Hourly Activity

Peak activity at 03:00 with 1 reports

Weekly Activity

Geographic Threat Distribution

1,232,466 threat incidents tracked globally • Last 24h: 19,987 Logs

FEED

Top Threat Sources

01

Brazil BR

261,728 21.2%
02

United States US

213,655 17.3%
03

India IN

104,167 8.5%
04

China CN

52,550 4.3%
05

Argentina AR

42,607 3.5%
06

SC SC

29,488 2.4%
07

Mexico MX

28,152 2.3%
08

Russia RU

27,415 2.2%
09

Germany DE

25,874 2.1%
10

Colombia CO

24,360 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

9.9/10 Avg Threat

91% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

High Risk

Threat Categories

Technical Details

Recommended Mitigations

Behavioral Analysis

Moderate Network Risk

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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