Is IP address 89.190.156.21 dangerous?

Yes, 89.190.156.21 is considered dangerous with a threat level of 8/10. It has been reported 17 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 89.190.156.21?

IP address 89.190.156.21 is operated by Alsycon B.V. (ASN 49870) and is geolocated to NL. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 89.190.156.21?

Yes, blocking 89.190.156.21 is strongly recommended. With a threat level of 8/10 and 17 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 89.190.156.21?

Our threat assessment for 89.190.156.21 has a confidence score of 97%, based on 17 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

89.190.156.21

IPv4 Public

AS49870

Alsycon B.V.

17 Reports

NL Location

Alsycon B.V. ASN 49870

17 Reports

Honeypot Data Source

High Risk

IP 89.190.156.21 rated at threat level 8/10 based on 17 security reports.

Pattern analysis reveals concerning activity. Confidence: 97%.

More threatening than 82% of monitored IPs

Threat Categories

SSH 17

Technical Details

SSH attacks attempt to gain server access through password guessing or exploitation of SSH vulnerabilities.

Recommended Mitigations

Use key-based authentication, change default ports, implement fail2ban, and disable root login.

Behavioral Analysis

Activity Pattern: Consistent Activity

Steady malicious activity over 2 weeks indicates persistent threat actor operations.

First Observed 11. May 2026

Last Activity 29. May 2026

Recent (7 days) 0 incidents

Reputable Network

This IP is hosted on a network (ASN 49870) with generally good reputation. The ISP Alsycon B.V. maintains standard security practices.

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

Security Recommendations

Monitor closely and consider blocking. Escalation potential detected.

Long-term blocking recommended.

Reputation Summary

Threat Level 8/10 High

Critical

Activity Frequency 7/10 High

Confidence Score 92% Verified

Confidence History

22. Apr 2026 - 29. May 2026

97% Current

Stable Trend

Date	Categories	Source	Confidence
29. May 2026	SSH	Honeypot	75%
28. May 2026	SSH	Honeypot	75%
28. May 2026	SSH	Honeypot	75%
27. May 2026	SSH	Honeypot	75%
26. May 2026	SSH	Honeypot x2	75%
25. May 2026	SSH	Honeypot	75%
19. May 2026	SSH	Honeypot	75%
17. May 2026	SSH	Honeypot	75%
14. May 2026	SSH	Honeypot	75%
11. May 2026	SSH	Honeypot	75%
8. May 2026	SSH	Honeypot	75%
8. May 2026	SSH	Honeypot	75%
6. May 2026	SSH	Honeypot	75%
1. May 2026	SSH	Honeypot	75%
23. Apr 2026	SSH	Honeypot	75%
23. Apr 2026	SSH	Honeypot	75%
22. Apr 2026	SSH	Honeypot	75%

Basic Information

IP Address: 89.190.156.21
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class A

Geolocation

Country: NL
ASN: AS49870
ISP: Alsycon B.V.

DNS Information

Reverse DNS: smtp-22.cloudmark.online
PTR Record: Yes
Connection Type: Static

Statistics

Total Reports: 17
First Reported: 22 Apr 2026
Last Reported: 29 May 2026, 15:02

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: AS49870

Organization: Alsycon B.V.

Country:

Network Threat Assessment

2/10

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

Network Statistics

102

Total IPs Monitored

81,824

Total Reports

802.2

Reports per IP

Network Context

This IP address belongs to Alsycon B.V. (AS49870), which manages 102 IP addresses in our monitoring system. Out of these, 81,824 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

82 %

Global Threat Ranking

This IP is more threatening than 82% of all IPs in our database.

High Threat Percentile

Global Comparison

Compared against 199,317 reported IPs worldwide

Threat Level 8/10 avg: 5.3 ++

Total Reports 17 avg: 23 -

Network Comparison

Compared against 126 IPs in ASN 49870

Threat Level 8/10 network avg: 5.8 +

Total Reports 17 network avg: 679 --

Network Alsycon B.V. has overall threat level 2/10

Geographic Comparison

Compared against 4,355 IPs in NL

Threat Level 8/10 country avg: 6.0 +

Total Reports 17 country avg: 95 --

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

Peak Day 28 May 2026 2 reports

Daily Average 0.3 reports/day

Most Active Thursday 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

SSH 17

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

Hourly Activity

Peak activity at 08:00 with 4 reports

Weekly Activity

Geographic Threat Distribution

187,017 threat incidents tracked globally • Last 24h: 18,967 Logs

FEED

Top Threat Sources

01

United States US

38,426 20.5%
02

India IN

28,977 15.5%
03

China CN

26,016 13.9%
04

Brazil BR

10,249 5.5%
05

Germany DE

7,139 3.8%
06

Singapore SG

6,475 3.5%
07

Indonesia ID

5,533 3%
08

Russia RU

4,701 2.5%
09

Pakistan PK

4,647 2.5%
10

Netherlands NL THIS IP

4,355 2.3%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

9.7/10 Avg Threat

94% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

High Risk

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

reportedIP

Parkstraße 19, 80339 München

Consultation

+49-89-215505888

Report a IP

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