Is IP address 5.223.51.3 dangerous?

Yes, 5.223.51.3 is considered dangerous with a threat level of 7/10. It has been reported 6 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 5.223.51.3?

IP address 5.223.51.3 is operated by Hetzner Online GmbH (ASN 215859) and is geolocated to SG. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 5.223.51.3?

Yes, blocking 5.223.51.3 is strongly recommended. With a threat level of 7/10 and 6 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 5.223.51.3?

Our threat assessment for 5.223.51.3 has a confidence score of 10%, based on 6 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

5.223.51.3

IPv4 Public

AS215859

Hetzner Online GmbH

6 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

SG Location

Hetzner Online GmbH ASN 215859

6 Reports

Community Data Source

Elevated Risk

Elevated threat level 7/10 for IP 5.223.51.3 from 6 reported incidents.

Behavioral profile indicates cyber threat activity with 10% confidence.

More threatening than 74% of monitored IPs

Threat Categories

Brute-Force 6

WP Login Brute Force 6

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.

Datacenter Infrastructure

This IP is allocated from datacenter space operated by Hetzner Online GmbH. Datacenter IPs used for attacks often indicate intentional malicious infrastructure.

Purpose-provisioned attack infrastructure may represent more sophisticated threat actors.

Security Recommendations

Enhanced monitoring recommended. Review logs for interactions with this IP.

Continue monitoring for emerging patterns.

Reputation Summary

Threat Level 7/10 High

High

Activity Frequency 0/10 Inactive

Confidence Score 0% Unverified

Confidence History

10. Nov 2025 - 11. Nov 2025

10% Current

Stable Trend

Date	Categories	Source	Confidence
11. Nov 2025	WP Login Brute Force Brute-Force	Community	75%
11. Nov 2025	WP Login Brute Force Brute-Force	Community	75%
11. Nov 2025	WP Login Brute Force Brute-Force	Community	75%
11. Nov 2025	WP Login Brute Force Brute-Force	Community	75%
11. Nov 2025	WP Login Brute Force Brute-Force	Community	75%
10. Nov 2025	WP Login Brute Force Brute-Force	Community	75%

Basic Information

IP Address: 5.223.51.3
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class A

Geolocation

Country: SG
ASN: AS215859
ISP: Hetzner Online GmbH

DNS Information

Reverse DNS: static.3.51.223.5.clients.your-server.de
PTR Record: Yes
Connection Type: Dynamic

Statistics

Total Reports: 6
First Reported: 10 Nov 2025
Last Reported: 11 Nov 2025, 18:45

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: AS215859

Organization: Hetzner Online GmbH

Country:

Network Threat Assessment

8/10

This network has a high threat level with significant malicious activity reported across multiple IPs.

Network Statistics

Total IPs Monitored

Total Reports

Reports per IP

Network Context

This IP address belongs to Hetzner Online GmbH (AS215859), which manages 3 IP addresses in our monitoring system. Out of these, 24 have been reported for suspicious activities, resulting in a network-wide threat level of 8/10.

Network warning: This network has elevated threat levels. Exercise caution when interacting with IPs from this ASN.

Comparative Analysis

How this IP compares to others in our threat intelligence database

74 %

Global Threat Ranking

This IP is more threatening than 74% of all IPs in our database.

Above Average Threat

Global Comparison

Compared against 852,026 reported IPs worldwide

Threat Level 7/10 avg: 6.3 =

Total Reports 6 avg: 9 -

Network Comparison

Compared against 19 IPs in ASN 215859

Threat Level 7/10 network avg: 7.9 =

Total Reports 6 network avg: 4 +

Network Hetzner Online GmbH has overall threat level 8/10

Geographic Comparison

Compared against 12,661 IPs in SG

Threat Level 7/10 country avg: 7.4 =

Total Reports 6 country avg: 9 -

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

Peak Day 0 reports

Daily Average 0 reports/day

Most Active Tuesday 5 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

WP Login Brute Force 6

Brute-Force 6

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

Hourly Activity

Peak activity at 18:00 with 3 reports

Weekly Activity

Geographic Threat Distribution

774,362 threat incidents tracked globally • Last 24h: 29,299 Logs

FEED

Top Threat Sources

01

United States US

151,205 19.5%
02

Brazil BR

112,985 14.6%
03

India IN

90,192 11.6%
04

China CN

46,680 6%
05

SC SC

29,267 3.8%
06

Germany DE

18,898 2.4%
07

Pakistan PK

18,465 2.4%
08

Netherlands NL

18,317 2.4%
09

Argentina AR

16,736 2.2%
10

Indonesia ID

15,391 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

18 Related IPs

8/10 Avg Threat

12% Avg Confidence

16 High Threat

High-risk network: Majority of related IPs are flagged

Elevated Risk

Threat Categories

Technical Details

Recommended Mitigations

Datacenter Infrastructure

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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