Is IP address 171.120.39.21 dangerous?

Yes, 171.120.39.21 is considered dangerous with a threat level of 7/10. It has been reported 1 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 171.120.39.21?

IP address 171.120.39.21 is operated by CHINA UNICOM China169 Backbone (ASN 4837) and is geolocated to CN. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 171.120.39.21?

Yes, blocking 171.120.39.21 is strongly recommended. With a threat level of 7/10 and 1 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 171.120.39.21?

Our threat assessment for 171.120.39.21 has a confidence score of 26%, based on 1 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

171.120.39.21

IPv4 Public

AS4837

CHINA UNICOM China169 Backbone

1 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

China Location

CHINA UNICOM China169 Bac... ASN 4837

1 Reports

Honeypot Data Source

Significant Threat

IP 171.120.39.21 identified as significant threat (7/10) from 1 events.

Multiple malicious indicators detected. Confidence level: 26%.

More threatening than 82% of monitored IPs

Threat Categories

Hacking 1

Technical Details

General hacking activity includes various intrusion attempts, exploitation of vulnerabilities, and unauthorized access attempts.

Recommended Mitigations

Keep systems patched, implement intrusion detection, and follow security best practices.

Behavioral Analysis

Activity Pattern: Consistent Activity

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

First Observed 27. September 2026

Last Activity 27. September 2026

Recent (7 days) 0 incidents

Reputable Network

This IP is hosted on a network (ASN 4837) with generally good reputation. The ISP CHINA UNICOM China169 Backbone maintains standard security practices.

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

Security Recommendations

Implement rate limiting or temporary blocking measures.

Long-term blocking recommended.

Reputation Summary

Threat Level 7/10 High

High

Activity Frequency 0/10 Inactive

Confidence Score 26% Medium Confidence

Date	Categories	Source	Confidence
27. Sep 2026	Hacking	Honeypot	75%

Basic Information

IP Address: 171.120.39.21
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class B

Geolocation

Country: CN
ASN: AS4837
ISP: CHINA UNICOM China169 Backbone

DNS Information

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

Statistics

Total Reports: 1
First Reported: 27 Sep 2026
Last Reported: 27 Sep 2026, 22:42

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: AS4837

Organization: CHINA UNICOM China169 Backbone

Country:

Network Threat Assessment

2/10

This network appears to be relatively clean with very low threat indicators.

Network Statistics

7,390

Total IPs Monitored

17,531

Total Reports

2.4

Reports per IP

Network Context

This IP address belongs to CHINA UNICOM China169 Backbone (AS4837), which manages 7,390 IP addresses in our monitoring system. Out of these, 17,531 have been reported for suspicious activities, resulting in a network-wide threat level of 2/10.

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

82 %

Global Threat Ranking

This IP is more threatening than 82% of all IPs in our database.

High Threat Percentile

Global Comparison

Compared against 833,163 reported IPs worldwide

Threat Level 7/10 avg: 6.3 =

Total Reports 1 avg: 9 --

Network Comparison

Compared against 15,745 IPs in ASN 4837

Threat Level 7/10 network avg: 7.2 =

Total Reports 1 network avg: 2 --

Network CHINA UNICOM China169 Backbone has overall threat level 2/10

Geographic Comparison

Compared against 46,083 IPs in CN

Threat Level 7/10 country avg: 7.4 =

Total Reports 1 country avg: 5 --

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

Peak Day 27 Sep 2026 1 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 6/10

Current Threat 6/10

Distribution of threat categories reported over time.

Top Threat Categories

Hacking 1

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

Hourly Activity

Peak activity at 22:00 with 1 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 THIS IP

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

9/10 Avg Threat

91% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

Significant Threat

Threat Categories

Technical Details

Recommended Mitigations

Behavioral Analysis

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

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