Is IP address 104.28.157.20 dangerous?

Yes, 104.28.157.20 is considered dangerous with a threat level of 10/10. It has been reported 5 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 104.28.157.20?

IP address 104.28.157.20 is operated by Cloudflare, Inc. (ASN 13335) and is geolocated to JP. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 104.28.157.20?

Yes, blocking 104.28.157.20 is strongly recommended. With a threat level of 10/10 and 5 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 104.28.157.20?

Our threat assessment for 104.28.157.20 has a confidence score of 82%, based on 5 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

104.28.157.20

IPv4 Public

AS13335

Cloudflare, Inc.

5 Reports

Japan Location

Cloudflare, Inc. ASN 13335

5 Reports

Honeypot Data Source

Critical Alert

Security alert: 104.28.157.20 rated 10/10 based on 5 verified incidents.

Threat profile indicates sustained malicious activity with 82% confidence rating.

More threatening than 97% of monitored IPs

Threat Categories

Brute-Force 3

Web App Attack 3

WP Login Brute Force 1

Hacking 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.

Behavioral Analysis

Activity Pattern: Consistent Activity

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

First Observed 20. August 2026

Last Activity 20. August 2026

Recent (7 days) 3 incidents

Reputable Network

This IP is hosted on a network (ASN 13335) with generally good reputation. The ISP Cloudflare, Inc. maintains standard security practices.

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

Security Recommendations

Implement immediate countermeasures. Well-resourced threat actor identified.

Long-term blocking recommended.

Reputation Summary

Threat Level 10/10 Critical

Critical

Activity Frequency 6/10 Moderate

Confidence Score 76% Verified

Confidence History

17. May 2026 - 20. Aug 2026

82% Current

Stable Trend

Date	Categories	Source	Confidence
20. Aug 2026	Brute-Force Web App Attack	Honeypot	75%
20. Aug 2026	Brute-Force Web App Attack	Honeypot	75%
20. Aug 2026	Brute-Force Web App Attack	Honeypot	75%
16. Jun 2026	WP Login Brute Force	Honeypot	75%
17. May 2026	Hacking	Honeypot	75%

Basic Information

IP Address: 104.28.157.20
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class A

Geolocation

Country: JP
ASN: AS13335
ISP: Cloudflare, Inc.

DNS Information

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

Statistics

Total Reports: 5
First Reported: 17 May 2026
Last Reported: 20 Aug 2026, 16:38

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: AS13335

Organization: Cloudflare, Inc.

Country:

Network Threat Assessment

3/10

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

Network Statistics

149

Total IPs Monitored

854

Total Reports

5.7

Reports per IP

Network Context

This IP address belongs to Cloudflare, Inc. (AS13335), which manages 149 IP addresses in our monitoring system. Out of these, 854 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

97 %

Global Threat Ranking

This IP is more threatening than 97% of all IPs in our database.

Top 10% Most Dangerous

Global Comparison

Compared against 389,104 reported IPs worldwide

Threat Level 10/10 avg: 6.0 ++

Total Reports 5 avg: 15 --

Network Comparison

Compared against 7,340 IPs in ASN 13335

Threat Level 10/10 network avg: 6.0 ++

Total Reports 5 network avg: 1 ++

Network Cloudflare, Inc. has overall threat level 3/10

Geographic Comparison

Compared against 3,746 IPs in JP

Threat Level 10/10 country avg: 6.7 ++

Total Reports 5 country avg: 10 -

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

Peak Day 20 Aug 2026 3 reports

Daily Average 0.1 reports/day

Most Active Thursday 3 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

Brute-Force 3

Web App Attack 3

Hacking 1

WP Login Brute Force 1

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

Hourly Activity

Peak activity at 16:00 with 4 reports

Weekly Activity

Geographic Threat Distribution

361,462 threat incidents tracked globally • Last 24h: 18,525 Logs

FEED

Top Threat Sources

01

United States US

86,640 24%
02

India IN

56,007 15.5%
03

China CN

38,633 10.7%
04

Brazil BR

29,224 8.1%
05

Germany DE

11,697 3.2%
06

Pakistan PK

9,790 2.7%
07

Indonesia ID

9,284 2.6%
08

Singapore SG

9,046 2.5%
09

Russia RU

7,256 2%
10

France FR

7,249 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

8.7/10 Avg Threat

80% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

Critical Alert

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