Is IP address 43.135.107.21 dangerous?

43.135.107.21 presents moderate risk with a threat level of 4/10. While not critically dangerous, it has been associated with activity. Monitoring and conditional blocking is recommended.

Who owns or operates IP address 43.135.107.21?

IP address 43.135.107.21 is operated by Tencent Building, Kejizhongyi Avenue (ASN 132203) and is geolocated to SG. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 43.135.107.21?

Blocking 43.135.107.21 is advisable for security-sensitive environments. With a threat level of 4/10, consider implementing conditional blocks or rate limiting.

How accurate is this threat assessment for 43.135.107.21?

Our threat assessment for 43.135.107.21 has a confidence score of 27%, based on 2 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

43.135.107.21

IPv4 Public

AS132203

Tencent Building, Kejizhongyi Avenue

2 Reports

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Singapore Location

Tencent Building, Kejizho... ASN 132203

2 Reports

Honeypot Data Source

Intermediate Threat

Threat level 4/10 for 43.135.107.21 from 2 reports.

Concerning behaviors alongside normal activity. 27% confidence.

More threatening than 2% of monitored IPs

Threat Categories

Email Spam 2

Technical Details

Email spam involves mass distribution of unwanted emails, often for advertising, phishing, or malware delivery.

Recommended Mitigations

Implement SPF, DKIM, DMARC, and use reputable email filtering services.

Behavioral Analysis

Activity Pattern: Consistent Activity

Steady malicious activity over 1 week indicates persistent threat actor operations.

First Observed 20. October 2026

Last Activity 28. October 2026

Recent (7 days) 0 incidents

Reputable Network

This IP is hosted on a network (ASN 132203) with generally good reputation. The ISP Tencent Building, Kejizhongyi Avenue 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.

Long-term blocking recommended.

Reputation Summary

Threat Level 4/10 Low

Medium

Activity Frequency 0/10 Inactive

Confidence Score 27% Medium Confidence

Confidence History

20. Oct 2026 - 28. Oct 2026

27% Current

Stable Trend

Date	Categories	Source	Confidence
28. Oct 2026	Email Spam	Honeypot	75%
20. Oct 2026	Email Spam	Honeypot	75%

Basic Information

IP Address: 43.135.107.21
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class A

Geolocation

Country: SG
ASN: AS132203
ISP: Tencent Building, Kejizhongyi Avenue

DNS Information

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

Statistics

Total Reports: 2
First Reported: 26 Oct 2026
Last Reported: 28 Oct 2026, 03:00

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: AS132203

Organization: Tencent Building, Kejizhongyi Avenue

Country:

Network Threat Assessment

1/10

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

Network Statistics

624

Total IPs Monitored

33,655

Total Reports

53.9

Reports per IP

Network Context

This IP address belongs to Tencent Building, Kejizhongyi Avenue (AS132203), which manages 624 IP addresses in our monitoring system. Out of these, 33,655 have been reported for suspicious activities, resulting in a network-wide threat level of 1/10.

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

2 %

Global Threat Ranking

This IP is more threatening than 2% of all IPs in our database.

Low Threat Percentile

Global Comparison

Compared against 1,318,889 reported IPs worldwide

Threat Level 4/10 avg: 6.0 -

Total Reports 2 avg: 7 --

Network Comparison

Compared against 2,578 IPs in ASN 132203

Threat Level 4/10 network avg: 7.7 -

Total Reports 2 network avg: 22 --

Network Tencent Building, Kejizhongyi Avenue has overall threat level 1/10

Geographic Comparison

Compared against 15,511 IPs in SG

Threat Level 4/10 country avg: 7.2 -

Total Reports 2 country avg: 9 --

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

Peak Day 20 Oct 2026 1 reports

Daily Average 0.1 reports/day

Most Active Tuesday 1 reports

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

Initial Threat 3/10

Current Threat 3/10

Distribution of threat categories reported over time.

Top Threat Categories

Email Spam 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

1,202,062 threat incidents tracked globally • Last 24h: 30,787 Logs

FEED

Top Threat Sources

01

Brazil BR

260,768 21.7%
02

United States US

205,131 17.1%
03

India IN

103,254 8.6%
04

China CN

50,501 4.2%
05

Argentina AR

42,351 3.5%
06

SC SC

29,432 2.4%
07

Mexico MX

27,834 2.3%
08

Russia RU

26,872 2.2%
09

Colombia CO

24,248 2%
10

Germany DE

24,029 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

9.3/10 Avg Threat

93% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

Intermediate 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

Analyzed high-risk IP addresses