Is IP address 81.18.221.21 dangerous?

Yes, 81.18.221.21 is considered dangerous with a threat level of 10/10. It has been reported 7 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 81.18.221.21?

IP address 81.18.221.21 is operated by Play (ASN 9141) and is geolocated to PL. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 81.18.221.21?

Yes, blocking 81.18.221.21 is strongly recommended. With a threat level of 10/10 and 7 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 81.18.221.21?

Our threat assessment for 81.18.221.21 has a confidence score of 63%, based on 7 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

81.18.221.21

IPv4 Public

AS9141

Play

7 Reports

Poland Location

Play ASN 9141

7 Reports

Honeypot Data Source

Critical Alert

Security alert: 81.18.221.21 rated 10/10 based on 7 verified incidents.

Threat profile indicates sustained malicious activity with 63% confidence rating.

More threatening than 91% of monitored IPs

Threat Categories

Hacking 7

SSH 6

Exploited Host 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: Recent Spike

Significant activity increase over past 7 days indicates renewed threat actor interest or system compromise.

First Observed 19. May 2026

Last Activity 21. May 2026

Recent (7 days) 0 incidents

Reputable Network

This IP is hosted on a network (ASN 9141) with generally good reputation. The ISP Play 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.

Immediate monitoring recommended.

Reputation Summary

Threat Level 10/10 Critical

Critical

Activity Frequency 8/10 High

Confidence Score 55% High Confidence

Confidence History

19. May 2026 - 21. May 2026

63% Current

Stable Trend

Date	Categories	Source	Confidence
21. May 2026	Exploited Host Hacking	Honeypot x2	75%
20. May 2026	Hacking SSH	Honeypot x2	75%
20. May 2026	SSH Hacking	Honeypot x2	75%
20. May 2026	SSH Hacking	Honeypot x2	75%
20. May 2026	Hacking SSH	Honeypot x2	75%
20. May 2026	Hacking SSH	Honeypot x2	75%
19. May 2026	Hacking SSH	Honeypot x2	75%

Basic Information

IP Address: 81.18.221.21
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class A

Geolocation

Country: PL
ASN: AS9141
ISP: Play

DNS Information

Reverse DNS: mail.patpol.eu
PTR Record: Yes
Connection Type: Static

Statistics

Total Reports: 7
First Reported: 19 May 2026
Last Reported: 21 May 2026, 03:14

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: AS9141

Organization: Play

Country:

Network Threat Assessment

2/10

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

Network Statistics

Total IPs Monitored

Total Reports

3.8

Reports per IP

Network Context

This IP address belongs to Play (AS9141), which manages 19 IP addresses in our monitoring system. Out of these, 73 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

91 %

Global Threat Ranking

This IP is more threatening than 91% of all IPs in our database.

Top 10% Most Dangerous

Global Comparison

Compared against 199,928 reported IPs worldwide

Threat Level 10/10 avg: 5.3 ++

Total Reports 7 avg: 23 --

Network Comparison

Compared against 27 IPs in ASN 9141

Threat Level 10/10 network avg: 5.3 ++

Total Reports 7 network avg: 5 +

Network Play has overall threat level 2/10

Geographic Comparison

Compared against 851 IPs in PL

Threat Level 10/10 country avg: 5.4 ++

Total Reports 7 country avg: 31 --

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

Peak Day 20 May 2026 5 reports

Daily Average 0.2 reports/day

Most Active Wednesday 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

Hacking 7

SSH 6

Exploited Host 1

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

Hourly Activity

Peak activity at 00:00 with 1 reports

Weekly Activity

Geographic Threat Distribution

187,611 threat incidents tracked globally • Last 24h: 18,967 Logs

FEED

Top Threat Sources

01

United States US

38,485 20.5%
02

India IN

29,222 15.6%
03

China CN

26,039 13.9%
04

Brazil BR

10,262 5.5%
05

Germany DE

7,147 3.8%
06

Singapore SG

6,479 3.5%
07

Indonesia ID

5,559 3%
08

Russia RU

4,710 2.5%
09

Pakistan PK

4,702 2.5%
10

Netherlands NL

4,362 2.3%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

4.7/10 Avg Threat

44% Avg Confidence

12 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

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Parkstraße 19, 80339 München

Consultation

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