Is IP address 121.184.40.103 dangerous?

Yes, 121.184.40.103 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 121.184.40.103?

IP address 121.184.40.103 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 121.184.40.103?

Yes, blocking 121.184.40.103 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 121.184.40.103?

Our threat assessment for 121.184.40.103 has a confidence score of 40%, based on 2 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

121.184.40.103

IPv4 Public

AS4766

Korea Telecom

2 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

2 Reports

Mixed Data Source

Significant Threat

IP 121.184.40.103 identified as significant threat (7/10) from 2 events.

Multiple malicious indicators detected. Confidence level: 40%.

More threatening than 85% of monitored IPs

Threat Categories

SSH 2

Hacking 1

Brute-Force 1

Technical Details

SSH attacks attempt to gain server access through password guessing or exploitation of SSH vulnerabilities.

Recommended Mitigations

Use key-based authentication, change default ports, implement fail2ban, and disable root login.

Behavioral Analysis

Activity Pattern: Consistent Activity

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

First Observed 16. October 2026

Last Activity 16. October 2026

Recent (7 days) 2 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

Implement rate limiting or temporary blocking measures.

Long-term blocking recommended.

Reputation Summary

Threat Level 7/10 High

High

Activity Frequency 6/10 Moderate

Confidence Score 40% Medium Confidence

Confidence History

16. Oct 2026

40% Current

Stable Trend

Date	Categories	Source	Confidence
16. Oct 2026 New	Hacking SSH	Honeypot x2	75%
16. Oct 2026 New	SSH Brute-Force	Community	75%

Basic Information

IP Address: 121.184.40.103
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class A

Geolocation

Country: KR
ASN: AS4766
ISP: Korea Telecom

DNS Information

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

Statistics

Total Reports: 2
First Reported: 17 Oct 2026
Last Reported: 16 Oct 2026, 20:46

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

85 %

Global Threat Ranking

This IP is more threatening than 85% of all IPs in our database.

High Threat Percentile

Global Comparison

Compared against 952,682 reported IPs worldwide

Threat Level 7/10 avg: 6.2 =

Total Reports 2 avg: 8 --

Network Comparison

Compared against 2,279 IPs in ASN 4766

Threat Level 7/10 network avg: 7.1 =

Total Reports 2 network avg: 12 --

Network Korea Telecom has overall threat level 5/10

Geographic Comparison

Compared against 4,970 IPs in KR

Threat Level 7/10 country avg: 7.3 =

Total Reports 2 country avg: 12 --

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

Peak Day 16 Oct 2026 2 reports

Daily Average 0.1 reports/day

Most Active Friday 2 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

SSH 2

Brute-Force 1

Hacking 1

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

867,985 threat incidents tracked globally • Last 24h: 212,487 Logs

FEED

Top Threat Sources

01

United States US

173,816 20%
02

Brazil BR

138,522 16%
03

India IN

93,676 10.8%
04

China CN

47,669 5.5%
05

SC SC

29,337 3.4%
06

Argentina AR

21,280 2.5%
07

Germany DE

19,827 2.3%
08

Pakistan PK

19,285 2.2%
09

Netherlands NL

18,746 2.2%
10

Colombia CO

17,140 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

9.8/10 Avg Threat

95% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

Significant Threat

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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