Is IP address 140.205.208.157 dangerous?

140.205.208.157 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 140.205.208.157?

IP address 140.205.208.157 is operated by Hangzhou Alibaba Advertising Co.,Ltd. (ASN 37963) and is geolocated to CN. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 140.205.208.157?

Blocking 140.205.208.157 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 140.205.208.157?

Our threat assessment for 140.205.208.157 has a confidence score of 23%, based on 1 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

140.205.208.157

IPv4 Public

AS37963

Hangzhou Alibaba Advertising Co.,Ltd.

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

Hangzhou Alibaba Advertis... ASN 37963

1 Reports

Honeypot Data Source

Intermediate Threat

Threat level 4/10 for 140.205.208.157 from 1 reports.

Concerning behaviors alongside normal activity. 23% confidence.

More threatening than 1% of monitored IPs

Threat Categories

Email Spam 1

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.

Reputable Network

This IP is hosted on a network (ASN 37963) with generally good reputation. The ISP Hangzhou Alibaba Advertising Co.,Ltd. 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.

Continue monitoring for emerging patterns.

Reputation Summary

Threat Level 4/10 Low

Medium

Activity Frequency 2/10 Very Low

Confidence Score 10% Low Confidence

Date	Categories	Source	Confidence
30. Sep 2026	Email Spam	Honeypot	75%

Basic Information

IP Address: 140.205.208.157
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class B

Geolocation

Country: CN
ASN: AS37963
ISP: Hangzhou Alibaba Advertising Co.,Ltd.

DNS Information

Reverse DNS: out208-157.dm.aliyun.com
PTR Record: Yes
Connection Type: Static

Statistics

Total Reports: 1
First Reported: 30 Sep 2026
Last Reported: 30 Sep 2026, 11:00

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: AS37963

Organization: Hangzhou Alibaba Advertising Co.,Ltd.

Country:

Network Threat Assessment

3/10

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

Network Statistics

616

Total IPs Monitored

5,895

Total Reports

9.6

Reports per IP

Network Context

This IP address belongs to Hangzhou Alibaba Advertising Co.,Ltd. (AS37963), which manages 616 IP addresses in our monitoring system. Out of these, 5,895 have been reported for suspicious activities, resulting in a network-wide threat level of 3/10.

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

1 %

Global Threat Ranking

This IP is more threatening than 1% of all IPs in our database.

Low Threat Percentile

Global Comparison

Compared against 1,326,491 reported IPs worldwide

Threat Level 4/10 avg: 6.0 -

Total Reports 1 avg: 7 --

Network Comparison

Compared against 2,171 IPs in ASN 37963

Threat Level 4/10 network avg: 7.2 -

Total Reports 1 network avg: 6 --

Network Hangzhou Alibaba Advertising Co.,Ltd. has overall threat level 3/10

Geographic Comparison

Compared against 50,912 IPs in CN

Threat Level 4/10 country avg: 7.4 -

Total Reports 1 country avg: 5 --

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

Peak Day 0 reports

Daily Average 0 reports/day

Most Active Wednesday 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 1

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

Hourly Activity

Peak activity at 11:00 with 1 reports

Weekly Activity

Geographic Threat Distribution

1,209,136 threat incidents tracked globally • Last 24h: 33,651 Logs

FEED

Top Threat Sources

01

Brazil BR

261,016 21.6%
02

United States US

206,716 17.1%
03

India IN

103,480 8.6%
04

China CN THIS IP

50,912 4.2%
05

Argentina AR

42,401 3.5%
06

SC SC

29,446 2.4%
07

Mexico MX

27,910 2.3%
08

Russia RU

26,972 2.2%
09

Germany DE

24,345 2%
10

Colombia CO

24,266 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

9.6/10 Avg Threat

94% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

Intermediate Threat

Threat Categories

Technical Details

Recommended Mitigations

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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