Is IP address 121.131.220.142 dangerous?

121.131.220.142 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 121.131.220.142?

IP address 121.131.220.142 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 121.131.220.142?

Blocking 121.131.220.142 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 121.131.220.142?

Our threat assessment for 121.131.220.142 has a confidence score of 1%, based on 2 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

121.131.220.142

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

Measured Risk

IP 121.131.220.142 threat rating: 5/10 from 2 observations.

Attention-worthy behavior detected. Confidence: 1%.

More threatening than 3% of monitored IPs

Threat Categories

Brute-Force 1

Email Spam 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.

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

Standard security protocols sufficient. Monitor but no immediate blocking required.

Continue monitoring for emerging patterns.

Reputation Summary

Threat Level 5/10 Medium

Medium

Activity Frequency 0/10 Inactive

Confidence Score 1% Low Confidence

Confidence History

15. May 2026 - 16. May 2026

1% Current

Stable Trend

Date	Categories	Source	Confidence
16. May 2026	Brute-Force	Community	75%
15. May 2026	Email Spam	Honeypot	75%

Basic Information

IP Address: 121.131.220.142
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: 15 May 2026
Last Reported: 16 May 2026, 03:08

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

3 %

Global Threat Ranking

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

Low Threat Percentile

Global Comparison

Compared against 833,163 reported IPs worldwide

Threat Level 5/10 avg: 6.3 -

Total Reports 2 avg: 9 --

Network Comparison

Compared against 2,215 IPs in ASN 4766

Threat Level 5/10 network avg: 7.1 -

Total Reports 2 network avg: 11 --

Network Korea Telecom has overall threat level 5/10

Geographic Comparison

Compared against 4,826 IPs in KR

Threat Level 5/10 country avg: 7.3 -

Total Reports 2 country avg: 12 --

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

Peak Day 0 reports

Daily Average 0 reports/day

Most Active Friday 1 reports

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

Initial Threat 3/10

Current Threat 4/10

Distribution of threat categories reported over time.

Top Threat Categories

Email Spam 1

Brute-Force 1

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

Hourly Activity

Peak activity at 03:00 with 2 reports

Weekly Activity

Geographic Threat Distribution

757,422 threat incidents tracked globally • Last 24h: 30,543 Logs

FEED

Top Threat Sources

01

United States US

148,250 19.6%
02

Brazil BR

111,873 14.8%
03

India IN

87,197 11.5%
04

China CN

46,083 6.1%
05

SC SC

29,253 3.9%
06

Germany DE

18,439 2.4%
07

Netherlands NL

17,997 2.4%
08

Pakistan PK

17,824 2.4%
09

Argentina AR

16,270 2.1%
10

Colombia CO

15,171 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

Measured Risk

Threat Categories

Technical Details

Recommended Mitigations

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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